{"product_id":"marco-mainspring-3263-for-kurth-300-310-314-314b-steel","title":"Marco Mainspring #3263 for Kurth 300, 310, 314, 314B - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco\u003c\/strong\u003e Mainspring No. 3263 for \u003cstrong\u003eKurth\u003c\/strong\u003e caliber 300, 310, 314, 314B movements, steel, new in envelope. See images for precise mainspring specifications. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.\u003c\/p\u003e","brand":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":48993736786228,"sku":"PMS-CEM3263S-01","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-01-29_14.08.30.jpg?v=1769724565","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-3263-for-kurth-300-310-314-314b-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}