1956 Pittsburgh Pirates team-signed baseball. This Official National League ball (Giles) has been signed by 20 members of the 1956 Pittsburgh Pirates. Notable signatures include Roberto Clemente, Bobby Bragan (clubhouse autograph), Dick Groat, Roy Face, Frank Thomas, Vern Law, Bob Skinner, Bill Virdon. The ball and the signatures are in good condition. The baseball shows some discoloration, and some of the signatures are faded, but legible. The ball has been verified as authentic by PSA/DNA.