Sonata by Mark Tobey, American (1890 - 1976). Year: 1975, Medium: Screenprint on Richard de Bas, signed and numbered in pencil, Image Size: 16 x 19.5 inches, Size: 21.5 x 24.25 in. (54.61 x 61.6 cm), Frame Size: 24.5 x 26.5 inches, Publisher: Edition de Beauclair, Frankfurt
