I found a 1975 Musical Ride $50 bank note the other day. Went to the bank to cash a check, and asked if they had any older notes. Looks to be in extremely nice condition for a circulation find. I can only assume someone had fallen on hard times who had hung onto it for a while. Not uncirculated, but EF, I think. It's like winning a small lottery, in my opinion. Maybe I'll upload some scans!