1974

Baked enamel, on convex metal sheet.

7 7/8 x 11 3/4 in. (20 x 29.8 cm)

Signed in ink on a label affixed to the reverse (from the unnumbered edition of 25, there was also a numbered edition of 80 and 20 artist's proofs in Roman numerals), published by Edition Staeck, Heidelberg.