{"product_id":"tru-power-mainspring-bu15-for-felsa-700-705-mst-310-411-bulova-9ab-9abc-10auc-automatic-alloy","title":"Tru-Power Mainspring BU15 for Felsa 700, 705, MST 410, 411, Bulova 9AB, 9ABC, 10AUC automatic - Alloy","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eTru-Power \u003c\/strong\u003eMainspring with attached bridle BU15 for Felsa 700, 705, MST 410, 411, Bulova 9AB, 9ABC, 10AUC caliber \u003c\/span\u003eautomatic movements and perhaps others as well\u003cspan style=\"font-size: 14px;\"\u003e, alloy, 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 an adequate job of representing the item. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Tru-Power","offers":[{"title":"Default Title","offer_id":48989928259892,"sku":"PMS-TRUBU15A-01","price":8.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-01-0517.03.56.jpg?v=1767661564","url":"https:\/\/www.vintagetimeparts.com\/products\/tru-power-mainspring-bu15-for-felsa-700-705-mst-310-411-bulova-9ab-9abc-10auc-automatic-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}