I guess its coincidental that it was first registered in 1951 which was the same year that the PA-22 series appeared
No link to the PA-22 as far as I know. Also "registered" may be the wrong term.
does not bear the Piper name?
Yes it does, hence my request for the operator at the time, which pins it down to this machine.
I now have the song in my mind!
Quite right!
RR