{"product_id":"swartchild-black-shield-mainspring-4341-for-waltham-0s-3-0s-no-2230-steel","title":"Swartchild Black Shield Mainspring #4341½ for Waltham 0s \u0026 3\/0s No. 2230 - Steel","description":"\u003cp\u003e\u003cstrong\u003eSwartchild\u003c\/strong\u003e\u003cem\u003e Black Shield \u003c\/em\u003eMainspring #4341½ for \u003cstrong\u003eWaltham\u003c\/strong\u003e 0s \u0026amp; 3\/0s model 1907 movements, Factory No. 2230, steel, new in envelope.   See image for further details. I likely have several of these so the one you get may differ slightly from the images.  I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Swartchild","offers":[{"title":"Default Title","offer_id":47452863299892,"sku":"PMA-SWAT4341S-09","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/3847290348.jpg?v=1705296302","url":"https:\/\/www.vintagetimeparts.com\/products\/swartchild-black-shield-mainspring-4341-for-waltham-0s-3-0s-no-2230-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}