Haven’t seen on like it before, non tandem 120mm spacing 48h hub. Believe it’s 1st generation from the 70s but not 100% sure. Was on a vintage touring bike. Bearing spin good, but are a little bit loose. Could probably use as is or replace in the near future. Very small amount of rust in the hub shell but could maybe clean it up some more.

Message me with any questions you have, thank you.