John "Boog" Powell was with the Orioles’ World Series Champion teams in 1966 and 1970, the American League Champion teams in 1966, 1969, 1970 and 1971, and the American League East Division Champion teams in 1969, 1970, 1971, 1973 and 1974. The 4-time All-Star won the American League's Most Valuable Player award in 1970 and in 1964 posted a .606 slugging percentage to lead the American League. He batted left-handed and threw right-handed, playing first base, outfield, and designated hitter.

This Esskay Baltimore Orioles 30th anniversary / 1983 World Champions hat was signed by Powell and inscribed, "70 AL MVP." This hat includes a Great Moments COA.

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