Elgin Balance Staff for 0s Single Roller Factory No. 1731

ONE Elgin Balance Staff for 0s Single Roller, Factory No. 1731, new in envelope. See images for further details. This is either an aftermarket staff or a staff repackaged by the Continental Watch Supply material house and while not specified it looks to be close to a P10. I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.