Alloy Mainspring for 0s & 3/0s Elgin No. 825 / 6094

Unmarked Maker but Swiss Made Alloy Mainspring for 0s & 3/0s Elgin, Factory No. 6094.-0060 (825), new in envelope. See images for further details. 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.