{"product_id":"sandsteel-mainspring-south-bend-18s-29528-steel","title":"Sandsteel Mainspring - South Bend 18s No. 29528 - Steel","description":"\u003cp\u003e\u003cstrong\u003eSandsteel \u003c\/strong\u003eMainspring for \u003cstrong\u003eSouth Bend\u003c\/strong\u003e 18s, Factory No. 29528, 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 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":"Sandsteel","offers":[{"title":"Default Title","offer_id":47452071362868,"sku":"PMA-SAN29528S-09","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-09-06_19.41.28.jpg?v=1757212954","url":"https:\/\/www.vintagetimeparts.com\/products\/sandsteel-mainspring-south-bend-18s-29528-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}