{"product_id":"newall-security-mainspring-757-for-16s-illinois-no-47316-steel","title":"Newall Security Mainspring #757 for 16s Illinois No. 47316 - Steel","description":"\u003cp\u003e\u003cstrong\u003eNewall \u003c\/strong\u003e\u003cem\u003eSecurity \u003c\/em\u003eMainspring No. 757 for\u003cstrong\u003e Illinois \u003c\/strong\u003e16s 19j \u0026amp; 21j RR Movements, Factory No. 47316 or 573 depending on how old your catalog is, steel, new in envelope. See images for precise mainspring specifications. 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":"Newall","offers":[{"title":"Default Title","offer_id":48588287541556,"sku":"PMA-NEW0757S-05","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-05-1812.30.26.jpg?v=1747596804","url":"https:\/\/www.vintagetimeparts.com\/products\/newall-security-mainspring-757-for-16s-illinois-no-47316-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}