{"product_id":"borel-mainspring-sa355-for-howard-12s-factory-no-553-alloy","title":"BOREL Mainspring SA355 for Howard 12s Factory No. 553 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eBOREL\u003c\/strong\u003e Mainspring SA355 for \u003cstrong\u003eHoward \u003c\/strong\u003e12s\u003cstrong\u003e \u003c\/strong\u003emovements, Factory No. 553, alloy, new in envelope. See images for precise mainspring specification. I likely have several of these so the one you get may differ slightly from the images. 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":"BOREL","offers":[{"title":"Default Title","offer_id":48689209278772,"sku":"PMA-BORSA355A-05","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-07-1609.09.06.jpg?v=1752682308","url":"https:\/\/www.vintagetimeparts.com\/products\/borel-mainspring-sa355-for-howard-12s-factory-no-553-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}