{"product_id":"marco-mainspring-2893-for-gruen-caliber-707-713-steel","title":"Marco Mainspring #2893 for Gruen caliber 707, 713 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eMainspring No. 2893 for \u003cstrong\u003eGruen\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003ecaliber 707, 713 movements and perhaps others, steel, 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":49063311606068,"sku":"PMS-CEM2893S-03","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-06-0419.56.16.jpg?v=1780628366","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-2893-for-gruen-caliber-707-713-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}