This aircraft was not the Berliot-Spad 54. It was the Bleriot-Spad 34 which was a
a French twin-seat, single-engine biplane flight training aircraft designed in 1920. The side-by-side seating arrangement was unique for its time. 150 aircraft were built, 125 for the French Air Force, who used them until 1936.
The Finnish Air Force purchased two S.34s in 1921. Due to inadequate maintenance they did not last long and were withdrawn from service by 1925.
However The Spad 54 was a derivative of the Bleriot-Spad 34 and very similar and I am sure would appear identical looking at it from the rear as in. challenge image.
Therefore Dqavid you have control.