{"product_id":"swartchild-black-shield-super-mainspring-for-elgin-813-819-854-885-automatics-alloy","title":"Swartchild Black Shield SUPER Mainspring for Elgin 813, 819, 854, 885 automatics - Alloy","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eSwartchild \u003c\/strong\u003e\u003cem\u003eBlack Shield \u003c\/em\u003eSUPER\u003cem\u003e \u003c\/em\u003eMainspring with attached bridle for \u003cstrong\u003eElgin\u003c\/strong\u003e 813, 819, 854, 885 automatic movements plus perhaps similar ébauche watches, white alloy, new in envelope. These Elgin movements are SWISS Felsa based (4000, 1560, 4008, 4007), respectively, meaning it will fit more than just the specified Elgin and Felsa movements. See images for 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\/span\u003e\u003c\/p\u003e","brand":"Swartchild","offers":[{"title":"Default Title","offer_id":49131243798836,"sku":"PMS-SBSGR3700XA-06","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-05-1812.59.23.jpg?v=1779134965","url":"https:\/\/www.vintagetimeparts.com\/products\/swartchild-black-shield-super-mainspring-for-elgin-813-819-854-885-automatics-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}