{"product_id":"marco-mainspring-2885w-for-gruen-754-756-758-buren-30-alloy","title":"Marco Mainspring 2885W for Gruen 754, 756, 758, Buren 30 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eMainspring 2885W for Gruen\u003cstrong\u003e \u003c\/strong\u003ecaliber 754, 756, 758 \u0026amp; Buren caliber 30 movements plus perhaps others, white alloy, new in envelope. See images for precise mainspring specifications. I specialize in hard to find watch parts so I usually have whatever you might need 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":49075522470196,"sku":"PMS-CEM2885WA-04","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-04-0112.28.12.jpg?v=1775071802","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-2885w-for-gruen-754-756-758-buren-30-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}