Eleven of the 24 pitchers who have thrown perfect games are represented on this special baseball: Jim Bunning, Dennis Martinez, Don Larsen, Jim "Catfish" Hunter, Tom Browning, Mike Witt, Len Barker, David Wells, David Cone, Sany Koufax, and Kenny Rogers. And as a bonus, Harvey Haddix - the only man ever to throw 12 perfect innings but lost his "perfecto" in the 13th also signed this ball. Each man added the date of his achievement adjacent to his name. The signatures on the Official American League (Brown) baseball are strong except for Martinez's, which is fading. Comes with PSA.