A Brief History of the Marque
1933-1937 Berlin-Aachen Motor Werke AG, Berlin and Aachen
As it became increasingly difficult after the seizure of power by the National Socialists in Germany to sell foreign products, FN of Belgium found a way around Hitler's myopic policies by renaming their machines based on the locations of their factories and offices in Germany.
FN marketed a two-stroke of 198cc along with 350cc and 500cc four-strokes which differed from the originals in the tank badge and little else.
Sources: GTU Oldtimerservice, Tragatsch p82.