Rudolf Bauer "CONTRAST" Signed lower right: Rudolf Bauer. Signed in black pen on the reverse: Rudolf Bauer. There, also dated and titled in pencil (upside down): 1924 Contrast 1924 Mixed media on thick cardboard 74 x 104 cm Collection Rolf Gillhausen, Hamburg / Private collection, Berlin (from 1989 until 2011 on loan to Berlinische Galerie) Berlin-Moskau. Moskau, Berlin. Berlin, Berlinische Galerie, Landesmuseum für Moderne Kunst, Photographie und Architektur im Martin-Gropius-Bau; Moskau, Staatliches Puschkin-Museum für Bildende Künste; 1995/96, cat. no. III/52, p. 639 On the reverse with the violet stamp: DAS GEISTREICH R. BAUER AN DER HEERSTR. 78 CHARLOTTENBURG-WESTEND. On the back of the frame two labels of Berlinische Galerie (see below) 74 x 104 cm