{"product_id":"marco-mainspring-3313-for-wittnauer-caliber-8t-33-34-42-steel","title":"Marco Mainspring #3313 for Wittnauer caliber 8T, 33, 34, 42 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eMainspring No. 3313 for \u003cstrong\u003eWittnauer\u003c\/strong\u003e 8T, 33, 34, 42 caliber 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 an adequate of representing the item.\u003c\/p\u003e","brand":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":49113572213044,"sku":"PMS-CEM3313S-05","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-04-2912.09.33.jpg?v=1777490050","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-3313-for-wittnauer-caliber-8t-33-34-42-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}