Schönnagel
The automobile and engine test workshops Ing. H. Schönnagel were a German automobile manufacturer based in Berlin-Friedrichshain .
Only in 1924 was a 5/15 HP small car built , which was offered as a city and touring car . Its engine had a displacement of 1.5 l and an output of 15 hp (11 kW).
source
- Werner Oswald : Deutsche Autos 1920–1945 , 10th edition, Motorbuch Verlag Stuttgart (1996), ISBN 3-87943-519-7 , page 456