Mark Abteilung Flugzeugbau was aviation subsidiary of Breslau engineering firm 1919-1930, building sports monoplanes and 4-seat R.V/23 named for designer Rieseler.
Mark Abteilung Flugzeugbau was aviation subsidiary of Breslau engineering firm 1919-1930, building sports monoplanes and 4-seat R.V/23 named for designer Rieseler.