{"product_id":"swartchild-mainspring-for-12s-elgin-1720-steel","title":"Swartchild Mainspring for 12s Elgin No. 1720 - Steel","description":"\u003cp\u003e\u003cstrong\u003eSwartchild \u003c\/strong\u003e\u003cem\u003eBlack Shield \u003c\/em\u003emainspring No. 4361 for \u003cstrong\u003eElgin\u003c\/strong\u003e 12s movements, Factory No. 1720, steel, new in envelope. See images for precise mainspring specifications. This particular one is covered in grease (it's an Elgin factory mainspring) and will need to be cleaned thoroughly before use. 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":"Swartchild","offers":[{"title":"Default Title","offer_id":47452010643764,"sku":"PMA-SWA4361S-08","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/1386323859.jpg?v=1705279513","url":"https:\/\/www.vintagetimeparts.com\/products\/swartchild-mainspring-for-12s-elgin-1720-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}