BESTFIT Mainspring JA104 for 16s Elgin Pocket Watches No. 817 - Alloy

BESTFIT Mainspring MS-JA104 for 16s Elgin movements, Factory No. 817, alloy, new in envelope. 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.