Sidney Guberman, from Purple Series

FRANK STELLA (1936-2024) Sidney Guberman, from Purple Series lithograph in silver-purple, on Zerkall Copperplate deluxe paper, 1972, signed and dated in pencil, numbered 73⁄100 (there were also nine artist's proofs), published by Gemini G.E.L., Los Angeles, with their blindstamps and presumably with their ink stamp on the reverse, the full sheet, in apparently generally good condition, not examined out of the frame Sheet: 16 x 21 7⁄8 in. (406 x 556 mm.)