{"product_id":"marco-marshalloy-mainspring-3338m-for-wittnauer-11aw-as-1250-eterna-39-301-391-475-alloy","title":"Marco Marshalloy Mainspring 3338M for Wittnauer 11AW, AS 1250, Eterna 39, 301, 391, 475 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003e\u003cem\u003eMarshalloy\u003c\/em\u003e\u003cstrong\u003e \u003c\/strong\u003eMainspring 3338M for Wittnauer 11AW, AS 1250, Girard Perregaux 84, Eterna 39, 301, 391, 475 caliber movements, white alloy, new in envelope. See images for all supported calibers and 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":49004107268404,"sku":"PMS-CEM3338MA-01","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-01-2216.19.20.jpg?v=1769127659","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-marshalloy-mainspring-3338m-for-wittnauer-11aw-as-1250-eterna-39-301-391-475-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}