{"product_id":"marco-mainspring-750-for-ny-standard-6s-new-model-no-727-steel","title":"Marco Mainspring #750 for NY Standard 6s New Model No. 727 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eMainspring No. 750 for \u003cstrong\u003eNY Standard\u003c\/strong\u003e 6s New Model movements, Factory No. 727, Hole end, steel, new in envelope. See images for 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":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":48898094432564,"sku":"PMA-CEM0750S-09","price":6.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-09-1909.51.45_154b4851-bc00-4632-878f-fbda403acdb9.jpg?v=1758300904","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-750-for-ny-standard-6s-new-model-no-727-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}