{"product_id":"dynaflex-mainspring-for-hamilton-22-0s-6221-718601-alloy","title":"Dynaflex Mainspring for Hamilton 22\/0s No. 6221 \/ 718601 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eDynaflex\u003c\/strong\u003e Mainspring for 22\/0s \u003cstrong\u003eHamilton\u003c\/strong\u003e, Factory No. 6221 \/ 718601, alloy, new in 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":"Dynaflex","offers":[{"title":"Default Title","offer_id":48542437245236,"sku":"PMA-DYNA6221A-04","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-04-0814.35.25.jpg?v=1744148236","url":"https:\/\/www.vintagetimeparts.com\/products\/dynaflex-mainspring-for-hamilton-22-0s-6221-718601-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}