1991 Upper Deck Baseball High Series Pack
1991 Upper Deck is an 800-card set released in two series: A "Low" series of 700 cards, and a "Hi" series of 100
Look for the following inserts in Low series
Hank Aaron Baseball Heroes
Hank Aaron Autograph
Randomly inserted into Hi (SP2) Series packs is a limited edition short-printed, or "SP," insert. SP2 commemorates the events of May 1st, 1991 -- the date Nolan Ryan threw his 7th career no-hitter and Rickey Henderson broke the all-time stolen base record.