Marco Mainspring #386 for 8/0s Hampden Movements No. 15696 - Steel

Marco Mainspring No.386 for 8/0s Hampden Wrist Watch movements, Models Mary Jane & Josephine, Factory No. 15696, steel. Could also very well fit in other models 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.