Sigmar Polke (Oels 1941 – 2010 Cologne). Untitled. 1992 Acrylic and gouache on paper. 69,5 × 100 cm (27 ⅜ × 39 ⅜ in.). Signed and dated lower right: Sigmar Polke 92. [3170] Provenance: Galerie Erhard Klein, Bonn / Private Collection (1992 acquired) / Private Collection, USA Exhibition: El Mundo Imaginado. Obras Sobre Papel del Arte Contemporáneo Alemán. Madrid, Goethe Institut, 1992, ill. p. 75 Literature and illustration: Postwar and Contemporary Day Auction. London, Christie's, 17.10.2015, cat. no. 248, w. ill. We would like to thank Michael Trier, Cologne, for kindly providing additional information