{"product_id":"newall-super-security-mainspring-529-for-waltham-12s-colonial-1924-no-2237-alloy","title":"Newall SUPER Security Mainspring #529 for Waltham 12s Colonial No. 2237 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eNewall \u003c\/strong\u003e\u003cem\u003eSUPER\u003c\/em\u003e\u003cem\u003e \u003c\/em\u003eSecurity\u003cem\u003e \u003c\/em\u003eMainspring #529 for \u003cstrong\u003eWaltham \u003c\/strong\u003e12s Colonial B Movements, Factory No. 2237 (\u0026amp; 2269), alloy, new in envelope. See image for specifications and further details. 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 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":47452035842356,"sku":"PMA-NEW0529A-06","price":12.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-06-16_11.49.33.jpg?v=1750099837","url":"https:\/\/www.vintagetimeparts.com\/products\/newall-super-security-mainspring-529-for-waltham-12s-colonial-1924-no-2237-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}