{"product_id":"nivaflex-mainspring-for-16s-hamilton-318-alloy","title":"Nivaflex Mainspring for 16s Hamilton No. 318 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eNivaflex\u003c\/strong\u003e\u003cem\u003e\u003c\/em\u003e Mainspring for\u003cstrong\u003e Hamilton \u003c\/strong\u003e16s Movements, Factory No. 318 , alloy, new in envelope. 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":"Nivaflex","offers":[{"title":"Default Title","offer_id":47452320891188,"sku":"PMA-NIVA0318A-06","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-06-16_19.31.49.jpg?v=1750127593","url":"https:\/\/www.vintagetimeparts.com\/products\/nivaflex-mainspring-for-16s-hamilton-318-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}