{"product_id":"swartchild-black-shield-mainspring-for-hamilton-0s-1536-steel","title":"Swartchild Black Shield Mainspring for Hamilton 0s #1536 - Steel","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwartchild \u003c\/strong\u003e\u0026amp; Co \u003cem\u003eBlack Shield\u003c\/em\u003e Mainspring No. 4372C for \u003cstrong\u003eHamilton\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e 0s movements and perhaps others as well, Factory No. 1536, steel, new in envelope. Swartchild Mainspring Catalog (which I sell) lists this as a Dennison 4 x 7. See image for further details. I specialize in 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":47452028338484,"sku":"PMA-SW4372CS-10","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/1160415085.jpg?v=1705280458","url":"https:\/\/www.vintagetimeparts.com\/products\/swartchild-black-shield-mainspring-for-hamilton-0s-1536-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}