77. SAM FRANCIS (1923-1994) Generated (SF-275), 1981 (Lembark , 246) Diptych consisting of two colour lithographs on John Koller HMP paper Artist's proof signed on one sheet and justified "AP 4/8" on the other Published by Gemini G.E.L, Los Angeles 102.9 x 154.9 cm Diptych with two colour lithographs on John Koller HMP paper, artist's proof signed on one sheet and justified "AP 4/8" on the other