A Brief History of the Marque
This firm is probably the same firm which produced an extensive range of engines for German aviation from 1926, and which began in Berlin in 1906 and produced engines for Sikorsky and then the German air force during WWI.
After 1945, they began motorcycle production, and being aviation experts
they produced a machine which was propellor-driven. It was not a great
success, and production ceased in 1948.