{"product_id":"hr-nivaflex-mainspring-g237-for-omega-19-4-eta-980-otero-25-gruen-823-alloy","title":"HR Nivaflex Mainspring G237 for Omega 19.4, ETA 980, Otero 25, Gruen 823 - Alloy","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eHR \u003c\/strong\u003e\u003cem\u003eNivaflex\u003c\/em\u003e\u003cstrong\u003e \u003c\/strong\u003eMainspring G307 for Omega 19.4, ETA 980, Otero 25, Lanco 524, Gruen 823 \u0026amp; Benrus AY caliber movements plus perhaps many more similar ébauche watches, 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 is 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. \u003c\/span\u003e\u003c\/p\u003e","brand":"HR","offers":[{"title":"Default Title","offer_id":48863491981620,"sku":"PMS-HRNFG237A-08","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-08-1721.05.52.jpg?v=1755490263","url":"https:\/\/www.vintagetimeparts.com\/products\/hr-nivaflex-mainspring-g237-for-omega-19-4-eta-980-otero-25-gruen-823-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}