Marco Mainspring #1112 for 16s Ingersoll-Trenton Reliance Factory No 2365 - Steel

Marco Mainspring #1112 for 16s Ingersoll and Ingersoll Trenton Reliance Pocket Watches, Factory No. 2365, steel, new in envelope. Could also very well fit in other watches as well. 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.