{"product_id":"swartchild-hole-end-music-box-mainspring-23-64-x-010-x-25-long-no-77-123-1","title":"Swartchild Hole End Music Box Mainspring - 23\/64\" x .010 x 39½\" Long - No. 77.123.1","description":"\u003cp\u003e\u003cstrong\u003eSwartchild \u003c\/strong\u003eMusic Box Mainspring, Hole End – 23\/64″ Width, .010 Strength\/Thickness, 39½″ Length, P\/N 77.123.1, steel, new in package. See images for further details. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch \u0026amp; clock parts and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item\u003c\/p\u003e","brand":"Swartchild \u0026 Co.","offers":[{"title":"Default Title","offer_id":48961189577012,"sku":"PMB-SW771231S-12","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-12-0618.08.14_ec5f3ff7-123a-4144-a2db-8033f2f73c13.jpg?v=1765075187","url":"https:\/\/www.vintagetimeparts.com\/products\/swartchild-hole-end-music-box-mainspring-23-64-x-010-x-25-long-no-77-123-1","provider":"Vintage Time Parts","version":"1.0","type":"link"}