{"product_id":"tru-power-mainspring-no-u535-for-as-984-1158-1187-1194-bulova-10bc-10bs-10bt-alloy","title":"Tru-Power Mainspring No. U535 for AS 984, 1158, 1187, 1194, Bulova 10BC, 10BS, 10BT - Alloy","description":"\u003cp\u003e\u003cstrong\u003eTru-Power\u003c\/strong\u003e Mainspring No U535 for \u003cspan style=\"font-size: 14px;\"\u003eA.S. 984, 1158, 1187, 1194, ETA 1280, Bulova 10BC, 10BS \u0026amp; 10BT, and Wittnauer 10E, 10S plus perhaps similar ébauche \u003c\/span\u003ewatches as well, alloy, new in envelope. See images for further data and 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":"Tru-Power","offers":[{"title":"Default Title","offer_id":49342251467060,"sku":"PMS-TRUU535A-10","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-10-2113.27.27.jpg?v=1792614944","url":"https:\/\/www.vintagetimeparts.com\/products\/tru-power-mainspring-no-u535-for-as-984-1158-1187-1194-bulova-10bc-10bs-10bt-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}