'The Potez aircraft of Marmier.' Four-passenger airliner of CFRNA, the French-Romanian airline, which from September 1922 operated a Paris to Bucharest service via Strasbourg, Prague, Vienna, Budapest and Arad - a really long haul at that time. French ace Lionel de Marmier worked for this company and also for Potez. CFRNA became CIDNA in 1925. It is safe to assume that the aircraft name is Regina Maria - Queen Maria of Romania did a lot to bring her country into World War I on the Allied side. Photo from: Bibliothèque nationale de France - Gallica