Richard Diebenkorn (American, 1922-1993), "Red-Yellow-Blue," 1986, color etching with aquatint and drypoint, initialed "R.D." in pencil and dated lower right, edition 27/60, image: 16"h x 29.75"w, overall (with frame): 29.75"h x 43.75"w. Provenance: Originally purchased from Graystone Contemporary, San Francisco, CA, in 1987. Copy of original invoice from Graystone Contemporary on file. StartPrice : 20000 €