{"product_id":"borel-mainspring-sa406-for-illinois-16s-60hr-factory-no-47309-alloy","title":"BOREL Mainspring SA406 for Illinois 16s 60hr Factory No. 47309 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eBOREL\u003c\/strong\u003e Mainspring SA406 for \u003cstrong\u003eIllinois\u003c\/strong\u003e 16s 60hr RR movements, Factory No. 47309, alloy, 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":"BOREL","offers":[{"title":"Default Title","offer_id":48707089105204,"sku":"PMA-MSJA406A-07","price":22.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-07-1918.56.19.jpg?v=1752976704","url":"https:\/\/www.vintagetimeparts.com\/products\/borel-mainspring-sa406-for-illinois-16s-60hr-factory-no-47309-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}