Karel Appel * (Amsterdam 1921–2006 Zurich) Untitled, 1974, signed and dated, acrylic on canvas, 100 x 100 cm The work is accompanied by a photo certificate signed by the artist Provenance: Galleria d’arte Spagnoli, Florence (label on the reverse) Galleria d’Arte Cafiso, Milan (certificate of provenance available) European Private Collection Literature: Arte Magazine, no. 204, February 1990, Editoriale Giorgio Mondadori, p. 5 with ill.