{"product_id":"comsco-mainspring-1131-for-illinois-18s-factory-no-47302-steel","title":"Comsco Mainspring #1131 for Illinois 18s Factory No. 47302 - Steel","description":"\u003cp\u003e\u003cstrong\u003eComsco\u003c\/strong\u003e Mainspring #1131 for \u003cstrong\u003eIllinois\u003c\/strong\u003e 18s movements, Factory No. 47302, steel, 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 and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Comsco","offers":[{"title":"Default Title","offer_id":49169353965876,"sku":"PMA-COM1131S-07","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-06-2213.16.03.jpg?v=1782159466","url":"https:\/\/www.vintagetimeparts.com\/products\/comsco-mainspring-1131-for-illinois-18s-factory-no-47302-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}