{"product_id":"marco-marshalloy-mainspring-3013m-for-omega-caliber-690-alloy","title":"Marco Marshalloy Mainspring 3013M for Omega caliber 690 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003e\u003cem\u003eMarshalloy\u003c\/em\u003e Mainspring 3013M for Omega caliber 690 movements and perhaps others as well, white 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.  Images do an adequate job of representing the item.\u003c\/p\u003e","brand":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":49128423850292,"sku":"PMS-CEM3013MA-05","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-05-1517.39.49.jpg?v=1778892172","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-marshalloy-mainspring-3013m-for-omega-caliber-690-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}