{"product_id":"bestfit-mainspring-ja404-for-18s-illinois-pocket-watches-no-47303-alloy","title":"BESTFIT Mainspring JA404 for 18s Illinois Pocket Watches No. 47303 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eBESTFIT \u003c\/strong\u003eMainspring MS-JA404 for 18s \u003cstrong\u003eIllinois \u003c\/strong\u003emovements, Factory No. 47303, Alloy, new in envelope. See images for precise specifications. Should also fit an 18S Rockford, should you need one. 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":"Bestfit","offers":[{"title":"Default Title","offer_id":47451919876404,"sku":"PMA-MSJA404A-10","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-10-10_09.59.05.jpg?v=1760115625","url":"https:\/\/www.vintagetimeparts.com\/products\/bestfit-mainspring-ja404-for-18s-illinois-pocket-watches-no-47303-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}