Official National League (Giles) ball signed by the 1968 Pittsburgh Pirates features 26 signatures including Roberto Clemente; Larry Shepard (very faint); Willie Stargell; Bill Mazeroski; Carl Taylor; Gary Kolb; Jerry May; Luke Walker; Jose Pagen; Tommie Sisk; Gene Alley; Donn Clendenon; Maury Wills; Bill Virdon; Chris Cannizzaro; Dock Ellis and others. Clemente signature is nice and large; most signatures average 7-8/10. Ball presents in a strong NRMT to MINT condition overall.