{"product_id":"elgin-factory-mainspring-for-12s-grade-657-lip-r40-alloy","title":"Elgin Factory Mainspring for 12s Grade 657 (LIP R40) Pocket Watch movement - Alloy","description":"\u003cp\u003e\u003cstrong\u003eElgin \u003c\/strong\u003eFactory Mainspring for 12s Grade 657 movement, alloy, new in open envelope. This Grade 657 is a LIP caliber R40 based Swiss pocket watch movement. See images for further details. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item\u003c\/p\u003e","brand":"Elgin","offers":[{"title":"Default Title","offer_id":48409014174004,"sku":"PMS-ELG258657A-12","price":12.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-01-0319.31.30.jpg?v=1735961611","url":"https:\/\/www.vintagetimeparts.com\/products\/elgin-factory-mainspring-for-12s-grade-657-lip-r40-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}