Jurgensen Mainspring #564 for Waltham 3/0s Factory No. 2228 - Steel

Jurgensen Mainspring #564 for Waltham 3/0s, Factory No. 2228, steel, new in envelope. See images for further details and 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.