{"product_id":"marco-mainspring-3197-for-17-ligne-unitas-226-327-345-497-498-501-6497-steel","title":"Marco Mainspring #3197 for 17 ligne Unitas 226, 327, 345, 497, 498, 501, 6497 Pocket Watch Movements - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eMainspring No. 3197 for 17 ligne Unitas caliber 226, 327, 345, 497, 498, 501, 6497 and Felsa caliber 141, 147, 153, 271, 278, 310 Pocket Watch movements, as well as other pocket watches based on these Swiss \u003cspan style=\"font-size: 14px;\"\u003eébauches\u003c\/span\u003e, such as modern Elgin's (326, 868, 876), 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":49366964699444,"sku":"PMS-CEM3197S-11","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-11-0414.06.09.jpg?v=1793830456","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-3197-for-17-ligne-unitas-226-327-345-497-498-501-6497-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}