Original sketch by Bill Griffith of Zippy the Pinhead from his Zippy comic strip, accomplished in ink on an off-white 8.5 x 11 sheet, which is signed and inscribed, "For Kathy—Bill Griffith, 3-17-92," who adds "Zippy" in bubble letters and a speech bubble remark from Zippy: "Yow!! Am I a collector's item yet??" The lower left bears a Zippy stamp. In very fine condition. Encapsulated and graded by PSA/DNA as "GEM MT 10."