NuREZISTA Mainspring #707 for Illinois 18/0s Factory No. 47385 - Steel

NuREZISTA Mainspring #707 for Illinois 6/0s movements, Factory No. 47385, steel, new in envelope. See image 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.