{"product_id":"marco-mainspring-212-for-waltham-16s-factory-no-2227-steel","title":"Marco Mainspring #212 for Waltham 16s 17j Factory No. 2227 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco\u003c\/strong\u003e\u003cem\u003e\u003c\/em\u003e Mainspring No. 212 for \u003cstrong\u003eWaltham\u003c\/strong\u003e 16s Model 1899 \u0026amp; 1908 17j movements, Factory No. 2227, steel, new in possibly frail envelope. See images for further details and precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. I specialize is 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":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":47452757918004,"sku":"PMA-CEM0212S-05","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-04-30_14.21.05.jpg?v=1746048092","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-212-for-waltham-16s-factory-no-2227-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}