{"product_id":"hr-nivastar-mainspring-g457-for-arogno-190-felsa-400-font-73-faver-250-alloy","title":"HR Nivastar Mainspring G457 for Arogno 190, Felsa 400, Font 73, Favor 250 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eHR \u003c\/strong\u003e\u003cem\u003eNivastar \u003c\/em\u003eMainspring G457 for Arogno 190, Felsa 400, Font 73, Favor 250 caliber movements plus perhaps others as well, alloy, new in envelope. See images for precise mainspring specifications. I specialize in 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":49130691756340,"sku":"PMS-HRNSG457A-05","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-05-1720.18.15.jpg?v=1779074528","url":"https:\/\/www.vintagetimeparts.com\/products\/hr-nivastar-mainspring-g457-for-arogno-190-felsa-400-font-73-faver-250-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}