Marco Mainspring #257 for Waltham 16s Military Timer #2246 - Steel

Marco Mainspring No. 257 for Waltham 16s Timer Running Barrel military movements, Factory No. 2246, steel, new in envelope. See image for further details and precise 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