{"product_id":"hr-quick-fit-mainspring-k536-for-parrenin-90-forster-50-500-recta-f-alloy","title":"HR Quick Fit Mainspring K536 for Parrenin 90, Forster 50, 500 \u0026 Recta F - Alloy","description":"\u003cp\u003e\u003cstrong\u003eHR \u003c\/strong\u003e\u003cem\u003eQuick Fit \u003c\/em\u003eMainspring K536 for Langendorf 1021, 1233, Parrenin 90, Forster 50, 500, Recta F movements, white alloy, new in envelope. See images for precise mainspring specifications. I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"HR","offers":[{"title":"Default Title","offer_id":48518665339188,"sku":"PMS-HRQF536A-04","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-03-2413.38.43.jpg?v=1742848870","url":"https:\/\/www.vintagetimeparts.com\/products\/hr-quick-fit-mainspring-k536-for-parrenin-90-forster-50-500-recta-f-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}