I confess to lifting these pictures straight from this great ADV Rider thread. They are too good not to post. For those who don’t know much about the early days of Moto GP and the significance of the early 2 stroke small cc bikes I highly recommend a book called “Stealing Speed”. It’s a well researched story of industrial espionage, spy vs spy and the end of WWII and German rocket science all rolled into one.

And here is the man himself.

From Wikipedia, the free encyclopedia
Henk van Kessel (born on June 25, 1946) is a former Grand Prix motorcycle road racer. He won the 1974 F.I.M. 50 cc world championship. He won seven Grand Prix races during his lengthy career.
Nationality Dutch
Motorcycle racing career statistics
Grand Prix motorcycle racing
Active years 1972 – 1976, 1978 – 1986
First race 1972 50cc Swedish Grand Prix
Last race 1986 Baden-Württemberg Grand Prix
First win 1974 50cc French Grand Prix
Last win 1979 50cc Belgian Grand Prix
Team(s) Kreidler
Championships 50cc – 1974
Starts 87 Wins 7 Podiums 25 Poles 0 F. laps Points422