COMES WITH CERTIFICATE OF AUTHENTICITY FROM J. PAUL SPORTS PROMOTIONS, INC. THIS IS A 24 X 36 AUTOGRAPHED POSTER. IT IS SIGNED BY 18 MEMBERS OF THE 1960 WORLD CHAMPION PITTSBURGH PIRATES. THEY ARE: TOM CHENEY, JOE CHRISTOPHER, GINO CIMOLI, ELROY FACE, EARL FRANCIS, JOE GIBBON, DICK GROAT, DON GROSS, VERN LAW, BILL MAZEROSKI, ROCKY NELSON, BOB OLDIS, DICK SCHOFIELD, HAL SMITH, BOB SKINNER, MICKEY VERNON, BILL BIRDON AND GEORGE WITT.