{"product_id":"comsco-mainspring-1070-for-elgin-12s-factory-no-1720-steel","title":"Comsco Mainspring #1070 for Elgin 12s Factory No. 1720 - Steel","description":"\u003cp\u003e\u003cstrong\u003eComsco \u003c\/strong\u003eMainspring #1070 for \u003cstrong\u003eElgin\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003e12s Movements, Factory No. 1720, steel, new in possibly frail envelope. Distributed by Burton M. Reid and Sons. See images for precise mainspring specifications and further details. 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 marginally adequate job of representing the item.\u003c\/p\u003e","brand":"Comsco","offers":[{"title":"Default Title","offer_id":48560578396468,"sku":"PMA-COM1070S-04","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-04-2310.51.26.jpg?v=1745430822","url":"https:\/\/www.vintagetimeparts.com\/products\/comsco-mainspring-1070-for-elgin-12s-factory-no-1720-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}