{"title":"Gruen","description":"","products":[{"product_id":"gruen-factory-steel-mainspring-for-caliber-460-462-470-475-movements","title":"Gruen Factory Steel Mainspring for caliber 460, 462, 470 \u0026 475 movements","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003ePrecision factory mainspring for calibers 460, 462, 470 \u0026amp; 475 movements, and quite likely others, steel, new in envelope. See images for precise mainspring specifications. Proper installation requires the use of a slip spring - which are usually fine to re-use - so it is not included. I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47451810627892,"sku":"PMS-GRUP460S-05","price":3.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/532645863.jpg?v=1705272496"},{"product_id":"gruen-factory-stem-for-caliber-430-new-in-envelope","title":"Gruen Factory stem for caliber 430 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 430 and perhaps others, new in envelope.   Stem may not be pristine but is unused and with a little cleaning will ready for installation. I likely have several of these so the one you get may differ slightly from the images.  I specialize in hard to find watch parts and all watch parts are \nunconditionally guaranteed. If you need a part for a Swiss watch I \nlikely have it so feel free to inquire.  Images do a pretty good job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452030665012,"sku":"SWW-GRU0430-11","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/1186233653.jpg?v=1705280710"},{"product_id":"vantage-factory-stem-for-caliber-130-electric-new","title":"Vantage Factory Stem for Caliber 130 Electric - New","description":"\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003eGenuine\u003c\/strong\u003e\u003cstrong\u003e Vantage \u003c\/strong\u003efactory stem #614 for Vantage caliber 130E Electric watch, new in envelope. Vantage watches were \"made\" by Hamilton, although they were really largely composed of Swiss parts.  Finding an original Vantage Electric is probably tough enough without trying to find parts, which are quite scarce.  I specialize in hard to find watch parts and all watch parts are \nunconditionally guaranteed. \u003cbr\u003e\u003c\/p\u003e","brand":"Vantage (Hamilton)","offers":[{"title":"Default Title","offer_id":47452130509108,"sku":"SWW-VANT0614-02","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/1963582013.jpg?v=1705285109"},{"product_id":"gruen-factory-mainspring-for-gruen-caliber-455-457-459-steel","title":"Gruen Factory Mainspring for Gruen caliber 455, 457, 459 - steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for calibers 455, 457, 459 and quite likely others, steel, new in open envelope.  I likely have several of these so the one you get may differ slightly from the images.  I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed.  Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452138570036,"sku":"PMS-GRU0455S-01","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2825268852.jpg?v=1705285545"},{"product_id":"gruen-factory-stem-for-caliber-405-thru-422-om-new-in-envelope","title":"Gruen Factory stem for caliber 405 thru 422 OM - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for calibers 405 OM thru 411 OM (Old Model), new in open envelope. Stem may not be pristine but is new and unused. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a pretty good job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452188737844,"sku":"SWW-GRU405OM-12","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2250753104.jpg?v=1705286099"},{"product_id":"gruen-factory-stem-for-caliber-710-rss-new-in-envelope","title":"Gruen Factory stem for caliber 710 RSS - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 710 RSS (R signifies Incabloc, SS is Sweep Second), new in sealed envelope.   Stem may not be pristine but is new and unused. I likely have several of these so the one you get may differ slightly from the images.  I specialize in hard to find watch parts and all watch parts are \nunconditionally guaranteed. If you need a part for a Swiss watch I \nlikely have it so feel free to inquire.  Images do a pretty good job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452189884724,"sku":"SWW-GRU710RSS-05","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2250753474.jpg?v=1705286105"},{"product_id":"gruen-factory-stem-for-caliber-490-new-in-envelope","title":"Gruen Factory stem for caliber 490 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 490 and perhaps others, new in sealed envelope.  I likely have several of these so the one you get may differ slightly from the images.  I specialize in hard to find watch parts and all watch parts are \nunconditionally guaranteed. If you need a part for a Swiss watch I \nlikely have it so feel free to inquire.  Images do a pretty good job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452191981876,"sku":"SWW-GRU0490-05","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2250491905.jpg?v=1705286110"},{"product_id":"gruen-factory-stem-for-caliber-405-nm-new-in-envelope","title":"Gruen Factory stem for caliber 405 NM - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 405, 406, 410, 411, 420, 421, 425, 426 NM (New Model) movements, new in envelope. Stem may not be pristine but is new and unused. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a pretty good job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452193620276,"sku":"SWW-GRU405NM-05","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-01-20_19.53.03.jpg?v=1768967646"},{"product_id":"gruen-factory-stem-for-caliber-275-new-in-envelope","title":"Gruen Factory stem for caliber 275 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 275 and others (285, 295), new in envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a marginally adequate job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452193653044,"sku":"SWW-GRU0275-05","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2251374281.jpg?v=1705286131"},{"product_id":"gruen-factory-stem-for-caliber-362-new-in-envelope","title":"Gruen Factory stem for caliber 362 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 362 and perhaps others, new in sealed envelope.  I likely have several of these so the one you get may differ slightly from the images.  I specialize in hard to find watch parts and all watch parts are \nunconditionally guaranteed. If you need a part for a Swiss watch I \nlikely have it so feel free to inquire.  Images do a marginally adequate job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452193718580,"sku":"SWW-GRU0362-05","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2251235366.jpg?v=1705286137"},{"product_id":"gruen-factory-mainspring-for-caliber-210-alloy","title":"Gruen Factory Mainspring for caliber 210 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 210 and likely others too, alloy, new in sealed envelope.  I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring.  I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed.  Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452203188532,"sku":"PMS-GRU0210A-05","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2268681378.jpg?v=1705286265"},{"product_id":"gruen-factory-stem-for-caliber-225-new-in-envelope","title":"Gruen Factory stem for caliber 225 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGruen\u003c\/strong\u003e factory stem for caliber 225 and perhaps others, new in open envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a marginally adequate job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452451930420,"sku":"SWW-GRU0225-01","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2833784205.jpg?v=1705289197"},{"product_id":"gruen-factory-mainspring-for-caliber-270-271-steel","title":"Gruen Factory Mainspring for caliber 270, 271 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 270, 271 and quite likely others, steel, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring, even the ones that say unbreakable as they're still just steel mainsprings. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452452323636,"sku":"PMS-GRU0270S-01","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2834188761.jpg?v=1723423264"},{"product_id":"gruen-factory-mainspring-for-caliber-380-steel","title":"Gruen Factory Mainspring for caliber 380, 381 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 380, 381, 385, 386, steel, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452489417012,"sku":"PMS-GRU0380S-01","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2890222017.jpg?v=1705289564"},{"product_id":"gruen-factory-mainspring-for-gruen-caliber-480-steel","title":"Gruen Factory Mainspring for Gruen caliber 480 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 480 movements, and quite likely others, steel, new in envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452587000116,"sku":"PMS-GRU0480S-05","price":8.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-08-2311.05.34.jpg?v=1755972461"},{"product_id":"gruen-factory-mainspring-for-caliber-290-steel","title":"Gruen Factory Mainspring for caliber 290, 291 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 290, 291 and quite likely others, steel, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. Gruen also had the annoying practice of marking many of their Steel mainsprings as unbreakable, which these are not.  I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452658467124,"sku":"PMS-GRU0290S-07","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-02-05_14.21.25.jpg?v=1756058466"},{"product_id":"gruen-factory-mainspring-for-caliber-275-280-movements-alloy","title":"Gruen Factory Mainspring for caliber 275, 280 movements - Alloy","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003eMainspring for caliber 275, 280 movements, and quite likely others, alloy, new in open envelope. I likely have several of there so the one you get may differ slightly from the images. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47452848062772,"sku":"PMS-GRU0275A-08","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/3781561494.jpg?v=1705295778"},{"product_id":"gruen-factory-steel-mainspring-for-17-ligne-caliber-v4-movements","title":"Gruen Factory Steel Mainspring for 17 Ligne Caliber V4 Movements","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003efactory mainspring for 17 ligne calibers V4 movements, and perhaps others, steel, new in envelope. See images for precise mainspring specifications. I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":47959018733876,"sku":"PMS-GRUPCV4S-05","price":7.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2024-05-1213.47.13-1.jpg?v=1715547139"},{"product_id":"gruen-factory-mainspring-for-caliber-225-alloy","title":"Gruen Factory Mainspring for caliber 225 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 225 bracelet movements and likely others too, alloy, new in envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48131493101876,"sku":"PMS-GRU0225A-07","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2024-08-0216.39.44.jpg?v=1722642262"},{"product_id":"gruen-factory-mainspring-for-caliber-270-271-alloy","title":"Gruen Factory Mainspring for caliber 270, 271 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 270, 271 and quite likely others, alloy, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48145660477748,"sku":"PMS-GRU0270A-07","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2024-08-1117.40.32.jpg?v=1723423390"},{"product_id":"gruen-factory-stem-for-caliber-215-new-in-envelope","title":"Gruen Factory stem for caliber 215 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGruen\u003c\/strong\u003e factory stem for caliber 215 movements and perhaps others, new in open envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a marginally adequate job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48574880448820,"sku":"SWW-GRU0215-05","price":4.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-05-0713.37.13.jpg?v=1746650422"},{"product_id":"gruen-factory-stem-for-caliber-290-nm-new-in-envelope","title":"Gruen Factory stem for caliber 290 NM - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 290 NM (New Model), new in sealed envelope. Stem may not be pristine but is new and unused. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a pretty good job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48575582404916,"sku":"SWW-GRU290NM-05","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-05-0819.03.45.jpg?v=1746756330"},{"product_id":"gruen-factory-stem-for-caliber-510-new-in-envelope","title":"Gruen Factory stem for caliber 510 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 510 and perhaps others, new in sealed envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a marginally adequate job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48575583813940,"sku":"SWW-GRU0510-05","price":8.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-05-0819.12.12.jpg?v=1746756950"},{"product_id":"gruen-factory-mainspring-for-caliber-707-steel","title":"Gruen Factory Mainspring for caliber 707 - steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 707 and quite likely others, steel, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48575968215348,"sku":"PMS-GRU0707S-05","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-05-0909.04.05.jpg?v=1746806866"},{"product_id":"gruen-factory-mainspring-for-caliber-327-328-329-steel","title":"Gruen Factory Mainspring for caliber 327, 328, 329 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 327, 328, 329 and quite likely others, steel, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48871941275956,"sku":"PMS-GRU0327S-08","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-08-2317.04.22.jpg?v=1755994043"},{"product_id":"gruen-factory-mainspring-for-caliber-115-117-119-123-steel","title":"Gruen Factory Mainspring for caliber 115, 117, 119, 123 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 115, 117, 119, 123 movements and quite likely others, steel, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48893347856692,"sku":"PMS-GRU0115S-09","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-09-1313.51.13.jpg?v=1757796861"},{"product_id":"gruen-factory-stem-for-caliber-415-new-in-envelope","title":"Gruen Factory stem for caliber 415 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 415 and perhaps others, new in sealed envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a pretty good job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48955529658676,"sku":"SWW-GRU0415-11","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-11-2820.06.11.jpg?v=1764389382"},{"product_id":"gruen-factory-stem-for-caliber-210-new-in-envelope","title":"Gruen Factory stem for caliber 210, 211, 212 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGruen\u003c\/strong\u003e factory stem for caliber 210, 211, 212 and perhaps others as well, new in envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a marginally adequate job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48955531526452,"sku":"SWW-GRU2210-11","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-01-20_20.11.05.jpg?v=1768968697"},{"product_id":"gruen-factory-stem-for-caliber-716-717-new-in-envelope","title":"Gruen Factory stem for 16L caliber 716, 717 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGruen\u003c\/strong\u003e factory stem for 16 ligne caliber 716, 717 Pocket Watch movements and perhaps others, new in envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a marginally adequate job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48968096383284,"sku":"SWW-GRU0716-12","price":8.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-12-1512.51.41.jpg?v=1765832163"},{"product_id":"gruen-factory-stem-for-17l-caliber-v1-to-v3-new-in-envelope","title":"Gruen Factory stem for 17L caliber V1 to V3 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGruen\u003c\/strong\u003e factory stem for 17 ligne caliber V1 to V3 Pocket Watch movements and perhaps others, new in envelope. Sometime, identifying parts takes a leap of faith and this stem is one of those as it came from my OLD Gruen factory system (parts often in tiny glass vials with corks) and merely says \"Veri-thin\" and looks slightly different from the V7 stems I have, hence I have concluded this is for the first generation of Veri-thin movements.  I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a marginally adequate job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48970773725492,"sku":"SWW-GRUVTV123-12","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-12-1518.54.12.jpg?v=1765854229"},{"product_id":"gruen-factory-stems-pair-for-caliber-270-271-new-in-envelope","title":"Gruen Factory stems (pair) for caliber 270, 271 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003ePair of \u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stems for calibers 270, 271 and perhaps others, new in envelope. Originally came as part of factory assortment #54. They look to be in fine shape but could use a cleaning. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a pretty good job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":48990113202484,"sku":"SWW-GRU0270-01","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-01-05_19.20.45.jpg?v=1767669676"},{"product_id":"gruen-factory-mainspring-for-caliber-215-alloy","title":"Gruen Factory Mainspring for caliber 215 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 215 bracelet movements and likely others too, alloy, new in sealed envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49059973497140,"sku":"PMS-GRU0215A-03","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-03-1012.32.58.jpg?v=1773171307"},{"product_id":"gruen-factory-stem-for-caliber-490ss-new-in-envelope","title":"Gruen Factory stem for caliber 490ss - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGRUEN\u003c\/strong\u003e factory stem for caliber 490ss (sweep second) and perhaps others, new in open envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a pretty good job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49059978379572,"sku":"SWW-GRU0490SS-03","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-03-1012.48.49.jpg?v=1773172236"},{"product_id":"gruen-factory-stem-for-caliber-106-107-new-in-envelope","title":"Gruen Factory stem for caliber 106, 107 - new in envelope","description":"\u003cp\u003e\u003cstrong\u003eGruen\u003c\/strong\u003e factory stem for caliber 106, 107 movements and perhaps others, new in open envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. If you need a part for a Swiss watch I likely have it so feel free to inquire. Images do a marginally adequate job of representing the item.\u003cbr\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49060087136564,"sku":"SWW-GRU0106-03","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-03-1016.28.29.jpg?v=1773185440"},{"product_id":"gruen-factory-mainspring-for-caliber-695-696-697-steel","title":"Gruen Factory Mainspring for caliber 695, 696, 697 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 695, 696, 697 and quite likely others, steel, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49060088348980,"sku":"PMS-GRU0695S-03","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-03-1016.38.51.jpg?v=1773186045"},{"product_id":"gruen-factory-mainspring-for-caliber-290-291-alloy","title":"Gruen Factory Mainspring for caliber 290, 291 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 290, 291 movements and perhaps others, alloy, new in sealed package. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49070298825012,"sku":"PMS-GRU0290A-03","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-03-2317.28.53.jpg?v=1774312275"},{"product_id":"gruen-factory-mainspring-for-gruen-caliber-485-487-steel","title":"Gruen Factory Mainspring for Gruen caliber 485, 487 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003eMainspring for caliber 485, 487 movements, and perhaps others, steel, new in envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49082410860852,"sku":"PMS-GRU0485S-04","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-04-0920.12.33.jpg?v=1775790889"},{"product_id":"gruen-factory-mainspring-for-gruen-caliber-311-330-355-400-500-steel","title":"Gruen Factory Mainspring for Gruen caliber 311, 330, 355, 400, 500 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003eMainspring for caliber 311, 330, 355, 400, 500  movements, and perhaps others, steel, new in envelope. These are funny because they came back and added other calibers after packaging. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49107021300020,"sku":"PMS-GRU0311S-04","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-04-2518.38.34.jpg?v=1777167701"},{"product_id":"gruen-factory-mainspring-for-gruen-caliber-325-325-1-steel","title":"Gruen Factory Mainspring for Gruen caliber 325, 325-1 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003eMainspring for caliber 325, 325-1 (3251) movements, and perhaps others, steel, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49113299026228,"sku":"PMS-GRU3251S-05","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-04-2912.04.16.jpg?v=1777489586"},{"product_id":"gruen-factory-mainspring-for-gruen-caliber-835-steel","title":"Gruen Factory Mainspring for Gruen caliber 835 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003eMainspring for caliber 835 movements, and perhaps others, steel, new in open envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49125164319028,"sku":"PMS-GRU835S-05","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-05-1009.15.23.jpg?v=1778429865"},{"product_id":"gruen-factory-mainspring-for-caliber-215-216-steel","title":"Gruen Factory Mainspring for caliber 215, 216 - Steel","description":"\u003cp\u003e\u003cstrong\u003eGruen \u003c\/strong\u003eFactory\u003cstrong\u003e \u003c\/strong\u003emainspring for caliber 215, 216 and quite possibly others, steel, new in envelope. I likely have several of the so the one you get may differ slightly from the images but they are all the same mainspring, even the ones that say unbreakable as they're still just steel mainsprings. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":49154773549364,"sku":"PMS-GRU0215S-06","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-06-0916.06.01.jpg?v=1781046484"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/collections\/1076361772.jpg?v=1705269634","url":"https:\/\/www.vintagetimeparts.com\/collections\/gruen.oembed?page=2","provider":"Vintage Time Parts","version":"1.0","type":"link"}