{"product_id":"ingersoll-reliance-mainspring-1365-for-16s-steel","title":"Ingersoll Reliance Mainspring No. 1365 for 16s - Steel","description":"\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003eMainspring for 16s \u003cstrong\u003eIngersoll \u003c\/strong\u003eand \u003cstrong\u003eIngersoll Reliance\u003c\/strong\u003e Pocket Watches, Factory No. 1365, T-end, new in envelope. Says it measures 12 x 2 (that's the 12 \u0026amp; .023) but the strength tends to vary about 1\/2 Dennison either way - the difference won't be an issue in an Ingersoll. 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 and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Regular","offers":[{"title":"Default Title","offer_id":47452100264244,"sku":"PMA-BLUE1365S-11","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-11-0118.59.31.jpg?v=1762048870","url":"https:\/\/www.vintagetimeparts.com\/products\/ingersoll-reliance-mainspring-1365-for-16s-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}