{"product_id":"miracle-power-mainspring-1085-for-gruen-430-431-435-440-steel","title":"Miracle Power Mainspring #1085 for Gruen 430, 431, 435 \u0026 440 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMiracle Power \u003c\/strong\u003eMainspring No. 1085 for \u003cstrong\u003eGruen\u003c\/strong\u003e caliber 430, 431, 435 \u0026amp; 440 movements plus perhaps other similar \u003cspan class=\"st\"\u003eébauche\u003c\/span\u003e movements as well, steel, 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":"Miracle Power","offers":[{"title":"Default Title","offer_id":48546413838644,"sku":"PMS-MIR1085S-04","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-04-1018.20.41.jpg?v=1744334794","url":"https:\/\/www.vintagetimeparts.com\/products\/miracle-power-mainspring-1085-for-gruen-430-431-435-440-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}