Roberto Clemente Jr. Signed Baseball Inscribed "9/30/72" (PSA COA)Baseball has been hand signed and inscribed by Roberto Clemente Jr. (The son of Pirates Superstar Roberto Clemente Sr.). Roberto Jr. added 9 30 72 inscription which was the date of his father's 3000th hit and ironically the last hit of his life and career due to his tragic death only 3 short months later. On New Years Eve December 31st 1972 Roberto Clemente chartered a plane for a humanitarian mission to earthquake stricken Nicaragua. Even though