{"product_id":"marco-mainspring-583-for-illinois-6-0s-factory-no-47371-steel","title":"Marco Mainspring #583 for Illinois 6\/0s Factory No. 47371 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco\u003c\/strong\u003e Mainspring #583 for \u003cstrong\u003eIllinois \u003c\/strong\u003e6\/0s, 4th to 6th model movements, Factory No. 47371, steel, new in envelope. See images for further details. 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 and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":49037247185204,"sku":"PMA-CEM0583S-02","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-02-07_16.34.29.jpg?v=1770512379","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-583-for-illinois-6-0s-factory-no-47371-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}