Sean Scully
Untitled (Working Proof for Pi), 1994
Unique etching and aquatint in black and gray with collage, on Somerset and wove paper, with full margins
I. 15 7/8 x 19 3/4 in. (40.3 x 50.2 cm); S. 22 1/4 x 31 in. (56.5 x 78.7 cm)
Signed