{"product_id":"sandsteel-mainspring-for-16s-elgin-no-4931-steel","title":"Sandsteel Mainspring for 16s Elgin No. 4931 - Steel","description":"\u003cp\u003e\u003cstrong\u003eSandsteel \u003c\/strong\u003eMainspring for \u003cstrong\u003eElgin \u003c\/strong\u003e16s 23j Motor Barrel movements, Factory No. 4931, steel, new frail 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 and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Sandsteel","offers":[{"title":"Default Title","offer_id":48571861139764,"sku":"PMA-SAN4931S-05","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-05-0210.20.46.jpg?v=1746206562","url":"https:\/\/www.vintagetimeparts.com\/products\/sandsteel-mainspring-for-16s-elgin-no-4931-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}