USR Mainspring for Waltham 14s No. 2210 - Steel

USR Mainspring for Waltham 14s, Factory No. 2210, steel, new in envelope. See images for further details. I may 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.