{"product_id":"hr-nivastar-mainspring-g575-for-aurore-39-tissot-13-6-it-13-6-21t-alloy","title":"HR Nivastar Mainspring G575 for Aurore 39, Tissot 13.6-IT \u0026 13.6-21T - Alloy","description":"\u003cp\u003e\u003cstrong\u003eHR\u003c\/strong\u003e \u003cem\u003eNivastar\u003c\/em\u003e Mainspring G575 for Aurore caliber 39, Tissot caliber 13.6-IT, 13.6 21T movements plus perhaps others, white 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 a pretty good job of representing the item.\u003c\/p\u003e","brand":"HR","offers":[{"title":"Default Title","offer_id":49071413264692,"sku":"PMS-HRNSG575A-03","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-03-2513.32.03.jpg?v=1774470965","url":"https:\/\/www.vintagetimeparts.com\/products\/hr-nivastar-mainspring-g575-for-aurore-39-tissot-13-6-it-13-6-21t-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}