Marco Mainspring #150 for 6s Elgin movements Factory No. 824 - Steel

Marco Mainspring #150 for Elgin 6s 1st & 2nd Model movements, Factory No. 824, steel, new in envelope. See images for precise mainspring specifications. 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.