Comsco Mainspring #1079 for Elgin 0s No. 825 - Steel

Comsco Mainspring #1079 for 0s Elgin, Factory No. 825, steel, new in envelope.  See images for precise mainspring specifications and further details. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.