{"product_id":"marco-mainspring-2751-for-as-340-780-1004-eta-128-376-377-379-380-383-384-389-785-887-steel","title":"Marco Mainspring #2751 for AS 340, 780, 1004, ETA 128, 376, 377, 379, 380, 383, 384, 389 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eMainspring No. 2751 for AS 340, 780, 1004, ETA 128, 376, 377, 379, 380, 383, 384, 389, Gruen 240, 241, 315, 344 caliber movements plus perhaps other similar \u003cspan class=\"st\"\u003eébauche\u003c\/span\u003e movements as well, steel, new in envelope. See images for all supported calibers and precise mainspring specifications. 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":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":49005202047284,"sku":"PMS-CEM2751S-01","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-01-2317.43.57.jpg?v=1769219260","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-2751-for-as-340-780-1004-eta-128-376-377-379-380-383-384-389-785-887-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}