Marco Mainspring #180 for 5/0s Elgin Grade 380 Factory No. 2705 - Steel

Marco (C&E Marshall) Mainspring #180 for 5/0s Elgin 15J Grade 380 movements, Factory No. 2705, steel, new in envelope. See image 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.