{"product_id":"bestfit-mainspring-ja311-for-12s-hampden-factory-no-12696-alloy","title":"BESTFIT Mainspring JA311 for 12s Hampden Factory No. 12696 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eBESTFIT \u003c\/strong\u003eMainspring JA-311 for\u003cstrong\u003e Hampden \u003c\/strong\u003e12s Movements, Factory No. 12696, alloy, new in envelope. 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 and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.\u003c\/p\u003e","brand":"BESTFIT","offers":[{"title":"Default Title","offer_id":49072786473268,"sku":"PMA-MSJA311A-03","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-03-2711.15.38.jpg?v=1774635461","url":"https:\/\/www.vintagetimeparts.com\/products\/bestfit-mainspring-ja311-for-12s-hampden-factory-no-12696-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}