Now there's lead! Not a PA-18 though being a
Cub it is close! It was a conversion (for research) of a standard(ish) Piper machine.
It was one of only two constructed, only one in this config.
Original year of registration
1951
I'm surprised that it doesn't appear in a Piper Book!!!
RR
(NB: Aerofiles shows it only as the original variant and therefore pointless to look there!)
Picking up on one of LM's clue styles.... think
Moon River.....