Arnulf Rainer, ”Parallel Malaktion mit Schimpanzen”, 1979 Signed, dated and titled lower left: A. Rainer 1979 "Parallel Malaktion" as well as stamped. On the reverse a label with explanatory text from Galerie Ronny Van de Velde, Antwerp 24 3/8 × 35 3/8 in. Pastel, graphite, coloured pencil and paper on cardboard