Marco Mainspring #1131 for 6/0s Ingersoll Alden Wrist Watch - Steel

Marco Mainspring No.1131 for 6/0s Ingersoll Alden Wrist Watches, steel, new in envelope. Could also very well fit in other watches as well. 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.