oil, sand pastes, board 75 x 50 cm signed and dated upper in the middle on the envelope: A. Procházka 21.   Provenance: - property of the painter Jaroslav Král, Brno - collection of Milan Heidenreich, Passau - collection of Dr. Ivo Rotter, National Gallery Belvedere, Vienna   Exhibited: - „Antonín Procházka, 1907-1921“, SVU Mánes, Prague, February-March 1923, cat. no. 49 - „Antonín Procházka, 1907-1921“, Skupina VU Brno, April 2–13, 1923, cat. no. 48 - „Antonín Procházka“, souborná výstava, Mánes, Prague, leden-únor 1947, cat. no. 62 - „Antonín Procházka: obrazy z let 1910-1925“, Dům umění města Brno, May 7 – June 4, 1967, cat. no. 46 - „Tschechischer Kubismus“, Museum Moderner Kunst, Passau; Salzburg; Graz; 1991 - „Moderne Tradition“, Museum Kinsky, Vienna, 2002 - „Beyond Klimt“, National Gallery Belvedere, Vienna, March 23 – August 26, 2018, reproduced in exhibition catalogue, p. 205 - exhibited as a long-term loan at National Gallery Belvedere, Vienna   Publicated: - Jiří Hlušička, Tschechischer Kubismus: Emil Filla und Zeitgenossen, Museum Moderner Kunst, Passau 1991, reproduced, p. 125 - Jiří Hlušička a spol., Antonín Procházka 1882-1945, Muzeum města Brna, Moravian Gallery Brno; Municipal House, Prague 2002, exhibition catalogue, reproduced, p. 316, fig. O 161 - Moderne Tradition, Museum Kinsky, Wien, 2002, reproduced, p. 75  The painting of Antonín Procházka of this significance has not been auctioned in Czech Republic yet.  Expertise by Professor Jaromír Zemina attached. Consulted Dr Karel Srp, Dr Jiří Machalický, Vladimír Lekeš and Mgr Alena Havlíková. Confirmation of authenticity attached.