{"product_id":"alloy-mainspring-for-18s-hamilton-factory-no-15","title":"Alloy Mainspring for 18s Hamilton Factory No. 718012","description":"\u003cp\u003eUnmarked Swiss Made Alloy Mainspring for 18s \u003cstrong\u003eHamilton\u003c\/strong\u003e movements, Factory No. 15 \/ 718012, T-end, 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.\u003cbr\u003e\u003c\/p\u003e","brand":"Unmarked","offers":[{"title":"Default Title","offer_id":49052998762804,"sku":"PMA-STA0015A-02","price":22.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-09-0212.22.34.jpg?v=1788377198","url":"https:\/\/www.vintagetimeparts.com\/products\/alloy-mainspring-for-18s-hamilton-factory-no-15","provider":"Vintage Time Parts","version":"1.0","type":"link"}