Hydra, thanks for the link, That is Henk Persoon on a knuckle sidecar outfit, competition number 38, but the photos are also 2 years earlier, during the 1936 6 day trial event, in Germany.
The Flying Dutchman pic I posted is competition number 109 during 1938 event in Wales UK.
You may be right, but 1000cc H-D #109 is reported as DJ Wuis at https://speedtracktales.com/index-of-isdt-events/isdt-1938-wales/
Nifty
Hydra74
The Flying Dutchman pic I posted is competition number 109 during 1938 event in Wales UK.
Nifty
Hydra74