{"product_id":"bestfit-mainspring-wv100-for-vulcain-caliber-406-wrist-alarm-alloy","title":"BESTFIT Mainspring WV100 for Vulcain caliber 406 Wrist Alarm - Alloy","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eBESTFIT \u003c\/strong\u003eMainspring WV100 for \u003cstrong\u003eVulcain\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003ecaliber 406 Wrist Alarm, white alloy, new in envelope. This is the ALARM side mainspring, not the Time side. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. 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":49235751797044,"sku":"PMS-BESTWV100A-08","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-08-0516.35.14.jpg?v=1785973079","url":"https:\/\/www.vintagetimeparts.com\/products\/bestfit-mainspring-wv100-for-vulcain-caliber-406-wrist-alarm-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}