{"product_id":"marco-mainspring-3221-for-frey-30-precimax-600-certina-15-021-record-75-102-kurth-220-steel","title":"Marco Mainspring #3221 for Frey 30, Precimax 600, Certina 15-021, Record 75, 102, Kurth 220 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eMainspring No. 3221 for A. Michel 600, 624, 627, Frey 30, Precimax 600, Certina 15-021, Record 75, 102, Kurth 220 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 a pretty good job of representing the item.\u003c\/p\u003e","brand":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":49333812265268,"sku":"PMS-CEM3221S-10","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-10-1614.14.01.jpg?v=1792185460","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-3221-for-frey-30-precimax-600-certina-15-021-record-75-102-kurth-220-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}