Richard Diebenkorn
Green Tree Spade, from Five Spades, 1982
Etching and aquatint in colors on J Whatman laid paper
9 1/8 x 11 5/8in (23.4 x 30cm)
sheet 18 x 23in (46.2 x 58.9cm)
Signed, 30/35 (there were also 11 artist's proofs)