May, nicknamed "The Big Bopper", hit 20 or more home runs and 80 or more runs batted in, in 11 consecutive seasons. He led the American League in RBI in 1976. He also made three All-Star Game appearances including as the starting first baseman for the National League team in 1972.
This Rawlings official American League baseball was signed in blue by May and includes a Great Moments COA.