{"product_id":"bestfit-mainspring-134z-for-ultra-caliber-41-alloy","title":"BESTFIT Mainspring 134Z for Ultra caliber 41 Pocket Watch movements - Alloy","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eBESTFIT \u003c\/strong\u003eMainspring 134Z for \u003cstrong\u003eUltra\u003c\/strong\u003e caliber 41 Pocket Watch movements plus perhaps similar ébauche watches, white 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. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"BESTFIT","offers":[{"title":"Default Title","offer_id":47451928527156,"sku":"PMS-BEST134ZA-06","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-06-1019.05.44.jpg?v=1781143664","url":"https:\/\/www.vintagetimeparts.com\/products\/bestfit-mainspring-134z-for-ultra-caliber-41-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}