Offset lithograph, on thin board, the full sheet,

1968

S. 18 1/4 x 26 3/8 in. (46.4 x 67 cm)

signed by both artists, dated `68' and numbered in pencil (the edition was 200, 30 in Roman numerals and 2 known artist's proofs), published by Galerie René Block, Berlin, unframed.