{"product_id":"bestfit-mainspring-311n-for-as-1538-1539-av-4201-hamilton-676-alloy","title":"BESTFIT Mainspring 311N for AS 1538, 1539, AV 4201, Hamilton 676 - Alloy","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eBESTFIT \u003c\/strong\u003eMainspring 311N for AS caliber 1538 \u0026amp; 1539 and Aurore {AV} caliber 4201 (which was the basis for the Hamilton Grade 676) plus perhaps similar ébauche watches, white 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 is 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":"BESTFIT","offers":[{"title":"Default Title","offer_id":47452010250548,"sku":"PMS-BEST311NA-07","price":12.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/1105233407.jpg?v=1705279461","url":"https:\/\/www.vintagetimeparts.com\/products\/bestfit-mainspring-311n-for-as-1538-1539-av-4201-hamilton-676-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}