This is a German card belonging to a series named "Modern Russian Painters", therefore must belong to pre-war days before 1914. As many German postcard companies done at those years, it was sold to the international market. This specimen was posted from Bucharest Roumania to Istanbul Turkey in 1916. It has Ottoman Turkish wartime military censor mark on its reverse.
T. S. N.
Kunstverlag Theo Stroefer Nürnberg
Theodor Stroefer (1843-1927)
Der Verlag: 1876-?