This thing is in very good shape, other than surface rust from being in storage longer than I’ve been alive (and I’m not young!) however I have not tested it and I do not know if it functions as it’s supposed to. One of the vowels turns freely the other one seems not to want to turn, and I did not want to damage it by forcing it. Everything else is free and seems to be in good shape. I’m not sure if this thing was ever actually used.
eBay