{"product_id":"sandsteel-mainspring-for-illinois-16s-60hr-rr-no-47310-steel","title":"Sandsteel Mainspring for Illinois 16s 60hr RR No. 47310 - Steel","description":"\u003cp\u003e\u003cstrong\u003eSandsteel \u003c\/strong\u003eMainspring for \u003cstrong\u003eIllinois\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003e16s \u003cstrong\u003e\u003c\/strong\u003e60hr Railroad movements, Factory No. 47310, steel, new in envelope. See images for precise mainspring specifications. This is the far less common cousin to the 47309. 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 barley adequate good job of representing the item.\u003c\/p\u003e","brand":"Sandsteel","offers":[{"title":"Default Title","offer_id":48879980314932,"sku":"PMA-SAN47310S-09","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-08-3115.15.50.jpg?v=1756678953","url":"https:\/\/www.vintagetimeparts.com\/products\/sandsteel-mainspring-for-illinois-16s-60hr-rr-no-47310-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}