3
Umwandlung/Transformation (with Gerhard Richter)
1968
Offset lithograph, on thin board, the full sheet,
S. 46.4 x 67 cm (18 1/4 x 26 3/8 in.)
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.