Original ink sketch of a front-facing self-portrait by Robert Crumb, which shows the artist wearing a hat and looking a bit haggard, with speech bubble to right adding, "I'm not funny." The sketch is accomplished in black ink on the uppermost off-white label on a four-label 4 x 6.25 sheet, which is also signed and inscribed, "To Bill Bush, obviously a man of taste!—from R. Crumb, 1987." The second and third labels contain an ANS signed "R. Crumb," in full: "Sorry—Don't have time nor artistic inclination to do this other thing—even though I could always use the dough!! Thanks for the fifty bucks though!" In very fine condition.