Comsco Mainspring #2082 for Elgin 5/0 & 6/0s Factory No. 2890 - Steel

Comsco Mainspring #2082 for Elgin 5/0 & 6/0s Movements, Factory No. 2890, steel, new in envelope. Distributed by Burton M. Reid and Sons. See images for specifications and 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.