Sarolea 1924 500cc OHV Supersport.
Sarolea, that started producing motorcycles in 1901, has always been one of the leading Belgian motorcycle manufacturers.
In the veteran days their engines were used in several makes.
After WWI the factory concentrated on single cylinder sidevalve and sporty OHV models.
The OHV models were successful in many races on the continent.
This type 23 is equipped with the single port 500cc OHV engine, known for its high power and rehability.