{"product_id":"swartchild-black-shield-mainspring-for-seth-thomas-18s-729-steel","title":"Swartchild Black Shield Mainspring for Seth Thomas 18s No. 729 - Steel","description":"\u003cp\u003e\u003cstrong\u003eSwartchild \u003c\/strong\u003e\u003cem\u003eBlack Shield\u003c\/em\u003e Mainspring #4398 for \u003cstrong\u003eSeth Thomas\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003e18s\u003cstrong\u003e \u003c\/strong\u003emovements, \u003cstrong\u003e\u003c\/strong\u003eFactory No. 729, steel, new in dirty envelope. See images 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":48307504054580,"sku":"PMA-SWA4398S-10","price":12.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2024-10-1812.49.53.jpg?v=1729281140","url":"https:\/\/www.vintagetimeparts.com\/products\/swartchild-black-shield-mainspring-for-seth-thomas-18s-729-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}