Marco Mainspring #256 for Waltham 22s 8-Day movements No. 2245 - Steel

Marco Mainspring No. 256 for Waltham 22s 8-Day Running Barrel movements, Factory No. 2245, steel, new in envelope. See images for further details. 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 an adequate job of representing the item.