NuResista Mainspring for Illinois 0s & 3/0s No. 47358 - Steel

NuResista Mainspring No. 695 for Illinois 0s & 3/0s movements, Factory No. 47358 steel, new in envelope. See images for further details. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.