NuVigor Mainspring #380 for 6s Hampden Factory No. 8696 - Steel

NuVigor Mainspring #380 for Hampden 6s Movements, Factory No. 8696, T end, steel, new in envelope. See image for further details. 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.