signed and dated '64 on the reverse
printed and painted paper and Rowlux mounted to board
28 by 21 7/8 in. 71 by 55.5 cm.
Dr. Hans Hülsberg, Hagen, Germany
Private Collection, North Rhine-Westphalia (thence by descent from the above)
Ketterer Kunst, Munich, 5 December 2007, Lot 424
Galerie Leu, Munich (on permanent loan to the Kunsthalle Hamburg)
Acquired from the above by the present owner in 2008