{"product_id":"nivaflex-unbreakable-mainspring-n7145-for-caravelle-11oac-11oec-elgin-824-825-as-1686-alloy","title":"Nivaflex Unbreakable Mainspring N7145 for Caravelle 11OAC, 11OEC, Elgin 824, 825 (AS\/ST 1686) - Alloy","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eNivaflex\u003c\/strong\u003e Unbreakable Mainspring N 7145 for Caravelle caliber 11OAC, 110EC, AS\/ST 1686 based movements plus perhaps similar ébauche watches (including a plethora of AS calibers), GR Ref. 4502, alloy, new in envelope. This mainsprings fits a huge list of AS\/ST 1686 based movements, including (but not limited to) Elgin 823, 824 and Hamilton 653, 657. See images for 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\/span\u003e\u003c\/p\u003e","brand":"Nivaflex","offers":[{"title":"Default Title","offer_id":48610853617972,"sku":"PMS-NIVAN7145A-06","price":9.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-06-0319.39.17.jpg?v=1749004930","url":"https:\/\/www.vintagetimeparts.com\/products\/nivaflex-unbreakable-mainspring-n7145-for-caravelle-11oac-11oec-elgin-824-825-as-1686-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}