Pre teens to teens BSA fixed gear hub. It came on a broken wood race rim. Nickel plated with some rust and scratches on barrel. Early BSA piled arms logo. It looks like someone put it in a vice to hold it to get cog off. It spins very nice and smooth. The nuts are nickel plated, washers are not correct. $75us shipped from Canada. Any duties/taxes if any are paid by buyer when delivered.