{"product_id":"sandsteel-mainspring-for-hamilton-12s-no-3328-steel","title":"Sandsteel Mainspring for Hamilton 12s No. 3328 - Steel","description":"\u003cp\u003e\u003cstrong\u003eSandsteel\u003c\/strong\u003e Mainspring for \u003cstrong\u003eHamilton \u003c\/strong\u003e12s movements, Factory No. 3328, steel, new in envelope. See images for precise mainspring specifications. I specialize in 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":48886290841908,"sku":"PMA-SAND3328S-09","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-09-0813.45.49.jpg?v=1757364517","url":"https:\/\/www.vintagetimeparts.com\/products\/sandsteel-mainspring-for-hamilton-12s-no-3328-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}