Alloy Mainspring for 8/0s Elgin No. 6002.-0039

Unmarked Maker but Swiss Made Alloy Mainspring for 8/0s Elgin, Factory No. 6002.-0039, DB&H end, new in package. See images for mainspring specifications. 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.