{"product_id":"alloy-mainspring-for-16s-hamilton-no-318","title":"Alloy Mainspring for 16s Hamilton No. 318","description":"\u003cp\u003eAlloy Mainspring for 16s \u003cstrong\u003eHamilton\u003c\/strong\u003e, Factory No. 318, Swiss made, new in envelope. See image for further details and 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.\u003cbr\u003e\u003c\/p\u003e","brand":"Unmarked","offers":[{"title":"Default Title","offer_id":49327724396852,"sku":"PMA-STA0318A-10","price":17.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-10-1020.20.21.jpg?v=1791688957","url":"https:\/\/www.vintagetimeparts.com\/products\/alloy-mainspring-for-16s-hamilton-no-318","provider":"Vintage Time Parts","version":"1.0","type":"link"}