{"product_id":"marco-mainspring-2728-for-tavannes-caliber-90-91-98-99-steel","title":"Marco Mainspring #2728 for Tavannes caliber 90, 91, 98, 99 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco\u003c\/strong\u003e Mainspring No. 2728 for \u003cstrong\u003eTavannes\u003c\/strong\u003e caliber 90, 81, 98, 99 movements and perhaps others, steel, new in envelope. See images for 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":49073999446324,"sku":"PMS-CEM2728S-04","price":6.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-03-3012.44.49.jpg?v=1774900061","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-2728-for-tavannes-caliber-90-91-98-99-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}