{"product_id":"marco-mainspring-3308-for-mst-caliber-359-steel","title":"Marco Mainspring 3308 for MST caliber 359 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eMainspring 3308 for \u003cstrong\u003eMST\u003c\/strong\u003e (Meyer \u0026amp; Studeli) caliber 359 movements plus perhaps other ones as well, steel, new in envelope. See images for further data and precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. 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":48983205347636,"sku":"PMS-CEM3308S-12","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-12-2311.47.15.jpg?v=1766519359","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-3308-for-mst-caliber-359-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}