3666863 Leopold II and Cleo de M\'erode singing an Operetta duet, 1904. (litho) by Ostoya, Georges d\' (Dochinsky or Sochinsky) (1878-1937); Private Collection; (add.info.: Leopold II (1835 ??1909) reigned as the second King of the Belgians from 1865 to 1909 and became known for the founding and exploitation of the Congo Free State as a private venture; Cleopatra Diane de Merode (1875 ??1966) was a French dancer of the Belle ?poque; Published in L\'Assiette au Beurre - No.181 Sep 1904;); Prismatic Pictures ; French, out of copyright.