Signed in pencil, lower right, verso: John Gutmann
Inscribed in pencil, upper left, verso: SF - 88 - 1/2 M 1 2 In pencil, lower left, verso: DOS | SLOGAN CAR WITH TWO-WALL GRAFFITI MURALS. | SAN FRANCISCO | 1988 | IIV In pencil, lower center, verso: CR - 2 | CC