{"product_id":"marco-mainspring-no-640-for-howard-10s-796-steel","title":"Marco Mainspring #640  for Howard 10s No. 796 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco\u003c\/strong\u003e Mainspring #640 for \u003cstrong\u003eHoward \u003c\/strong\u003e10s movements, Factory No. 796, tongue end, steel, new in envelope. See images for further details and precise mainspring specifications. I likely have several of these so the one you get may differ slight 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":47452133228852,"sku":"PMA-CEM0640S-02","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2027961300.jpg?v=1705285237","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-no-640-for-howard-10s-796-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}