{"product_id":"sandsteel-sandalloy-mainspring-s2224-for-gruen-caliber-405-406-410-411-etc-alloy","title":"Sandsteel Sandalloy Mainspring S2224 for Gruen caliber 405, 406, 410, 411, etc - Alloy","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eSandsteel \u003c\/strong\u003e\u003cem\u003eSandalloy\u003c\/em\u003e\u003cstrong\u003e \u003c\/strong\u003eMainspring S2224 for \u003cstrong\u003eGruen\u003c\/strong\u003e caliber 405, 406, 410, 411, 420, 421, 426 plus perhaps more Gruens and similar ébauche watches, alloy, 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 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\/span\u003e\u003c\/p\u003e","brand":"Sandsteel","offers":[{"title":"Default Title","offer_id":49038403010868,"sku":"PMS-SANS2224A-02","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-02-0918.02.22.jpg?v=1770689122","url":"https:\/\/www.vintagetimeparts.com\/products\/sandsteel-sandalloy-mainspring-s2224-for-gruen-caliber-405-406-410-411-etc-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}