{"product_id":"newall-security-mainspring-611-for-16s-hamilton-no-318-steel","title":"Newall Security Mainspring #611 for 16s Hamilton No. 318 - Steel","description":"\u003cp\u003e\u003cstrong\u003eNewall \u003c\/strong\u003e\u003cem\u003eSecurity\u003c\/em\u003e\u003cstrong\u003e \u003c\/strong\u003eMainspring #611 for\u003cstrong\u003e Hamilton \u003c\/strong\u003e16s Movements, Factory No. 318, steel, new envelope. See images for precise mainspring specifications. 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 so I usually have whatever you might need 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":48681466462516,"sku":"PMA-NEW0611S-06","price":12.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-07-1414.30.14.jpg?v=1752528778","url":"https:\/\/www.vintagetimeparts.com\/products\/newall-security-mainspring-611-for-16s-hamilton-no-318-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}