{"product_id":"watch-craft-mainspring-3107w-for-as-caliber-1203-1205-1206-eta-caliber-640-alloy","title":"WATCH-CRAFT Mainspring 3107W for AS caliber 1203, 1205, 1206, ETA caliber 640 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eWATCH-CRAFT \u003c\/strong\u003eMainspring 3107W for AS caliber 1203, 1205, 1206, ETA caliber 640 movements plus perhaps many 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":48894090445108,"sku":"PMS-CEM3107WA-09","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-09-1316.48.05.jpg?v=1757807465","url":"https:\/\/www.vintagetimeparts.com\/products\/watch-craft-mainspring-3107w-for-as-caliber-1203-1205-1206-eta-caliber-640-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}