{"product_id":"marco-mainspring-3193-for-bulova-7ah-7ak-7an-7ap-eta-734-735-740-756-757-steel","title":"Marco Mainspring #3193 for Bulova 7AH, 7AK, 7AN, 7AP, ETA 734, 735, 740, 756, 757 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eMainspring No. 3193 for Bulova 7AH, 7AK, 7AN, 7AP, ETA 734, 735, 740, 756, 757, Benrus AC caliber movements plus perhaps other similar \u003cspan class=\"st\"\u003eébauche\u003c\/span\u003e movements as well, 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":49125775180084,"sku":"PMS-CEM3193S-05","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-05-1112.57.37.jpg?v=1778532590","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-3193-for-bulova-7ah-7ak-7an-7ap-eta-734-735-740-756-757-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}