Grouping of six O-Pee-Chee cards, each of which indirectly feature Pirates outfielder and Hall of Famer Roberto Clemente.  Each card was once included in the #2 Roberto Clemente master set on the PSA Registry.  The collection includes the following:  1) 1965 O-Pee-Chee (1 card): #209 Pirates Team, PSA PR 1. 2) 1970 O-Pee Chee (1 card): #61 NL Batting Leaders (PSA VG 3), 3)1972 O-Pee-Chee (2 cards): #221 NL Playoffs (PSA VG-EX 4); #226 World Series Game 4 (PSA EX-MT 6), 4) 1973 O-Pee Chee (1 card): #26 Pirates Team (PSA NM-MT 8), 5) 1973 O-Pee-Chee Team Checklists (1 card): Pittsburgh Pirates (PSA EX-MT 6).  Six cards total.