Marco Mainspring #330 for 12s Hampden Model 1910 Pocket Watch #7696

Marco Mainspring No.330 for 12s Hampden Model 1910 Pocket Watches, Factory No. 7696, steel. Could also 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.