{"product_id":"nivaflex-unbreakable-mainspring-for-as-caliber-1220-alloy","title":"Nivaflex Unbreakable Mainspring for AS caliber 1220, 1221 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eNivaflex\u003c\/strong\u003e Unbreakable Mainspring for \u003cstrong\u003eAS\u003c\/strong\u003e caliber 1220, 1221 movements and perhaps others, white alloy, new in envelope. 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.\u003c\/p\u003e","brand":"Nivaflex","offers":[{"title":"Default Title","offer_id":49079541170484,"sku":"PMS-NIVA1200A-04","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-04-0518.07.39.jpg?v=1775437688","url":"https:\/\/www.vintagetimeparts.com\/products\/nivaflex-unbreakable-mainspring-for-as-caliber-1220-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}