{"product_id":"hr-mainspring-no-478-for-gruen-caliber-460-steel","title":"HR Mainspring No. 478 for Gruen caliber 460 - Steel","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eHR \u003c\/strong\u003eMainspring No. 478 for \u003cstrong\u003eGruen\u003c\/strong\u003e 460 caliber movements plus perhaps many more similar ébauche watches, steel, new in envelope. See image for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. 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 an adequate job of representing the item. \u003c\/span\u003e\u003c\/p\u003e","brand":"HR","offers":[{"title":"Default Title","offer_id":49133645693236,"sku":"PMS-HRMS478S-05","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-05-2019.14.39.jpg?v=1779329933","url":"https:\/\/www.vintagetimeparts.com\/products\/hr-mainspring-no-478-for-gruen-caliber-460-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}