Marco Mainspring #100 for Elgin 18s Veritas No. 1956 - Steel

Marco Mainspring No. 100 for Elgin 18s Veritas movements, Factory No. 1956, steel, new in envelope. See images for 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 and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.