{"product_id":"nutemper-mainspring-558-for-waltham-16s-no-2218-steel","title":"NuTemper Mainspring #558 for Waltham 16s No. 2218 - Steel","description":"\u003cp\u003e\u003cstrong\u003eNuTemper \u003c\/strong\u003eMainspring No. 558 for 16s \u003cstrong\u003eWaltham\u003c\/strong\u003e, Factory No. 2218, 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 so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"NuTemper","offers":[{"title":"Default Title","offer_id":48916135674164,"sku":"PMA-NUT0558S-10","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-10-1114.13.32.jpg?v=1760217369","url":"https:\/\/www.vintagetimeparts.com\/products\/nutemper-mainspring-558-for-waltham-16s-no-2218-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}