HR Mainspring A356 for Howard 10s No. 796 - Steel

HR Mainspring A356 for Howard 10s movements, Factory. No. 796, 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 in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.