HR Mainspring A314 for 8/0s Hampden No. 15696 - Steel

HR Mainspring A314 for Hampden 8/0s Movements, Factory No. 15696, steel, new in envelope. See images for precise characteristics. 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.