HR Mainspring SA107 for 16s Elgin B.W. Raymond No. 6164 - Alloy

HR Mainspring SA107 for Elgin 16s B.W. Raymond Models and perhaps others, Factory No. 6164, alloy, new in envelope. See images for precise characteristics. I likely have several of these so the one you get may differ 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.