{"product_id":"watch-craft-mainspring-2810w-for-gruen-caliber-720-721-pocket-watch-movements-alloy","title":"Watch-Craft Mainspring 2810W for Gruen caliber 720 \u0026 721 Pocket Watch movements - Alloy","description":"\u003cp\u003e\u003cstrong\u003eWatch-Craft \u003c\/strong\u003ealloy mainspring 2810W for Gruen\u003cstrong\u003e \u003c\/strong\u003ecaliber 720 \u0026amp; 721 plus UT 429 pocket watch movements and perhaps others, new in envelope. See images for precise mainspring specifications. I specialize is 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":47452330098996,"sku":"PMS-CEM2810WA-08","price":17.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/2483666068.jpg?v=1705287404","url":"https:\/\/www.vintagetimeparts.com\/products\/watch-craft-mainspring-2810w-for-gruen-caliber-720-721-pocket-watch-movements-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}