No pistons just crank pinns.
The Prince was made for a few
years only so not many was sold
so not much aftermarket support
for them.
Mine have kind of a interesting history.
Sold new in France probably confiscated
by the Germans during the war
Stolen in Finland from the Germans one night by
the man my father bought it from in the 60s
He and a friend crossed the Finnish Swedish border
on skiis with a sledge one night with no moon
and waited outside the German Camp till there was no
sign of movement and went in to the camp and grabbed
the first motorcycle put it in the sledge and got
moving towards Sweden faster than a speedig bullet
I Think the guys on guard duty that night had some
questions to answer the next morning
I Gues you have to have some hair on your chest
to steal a motorcycles from a buch of well armed
Nazis in the midle of a war