BESTFIT Mainspring JA107 for 16s Elgin Factory No. 6164 - Alloy

BESTFIT Mainspring JA-107 for Elgin 16s, Factory No. 6164, alloy, new in envelope. See images for precise mainspring specifications. I likely have several of these so they 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.