The 39 cent postage stamps were unveiled in March of 2006 at the Mickey Mantle restaurant in New York City. The official first day ceremony was held at Yankee Stadium just before the New York Yankees and Chicago White Sox were due to play in July of 2006.
There are four well known baseball players that are represented in this stamp set. Roy Campanella, played for the Brooklyn Dodgers and was the first African American catcher in the Major Leagues. His extensive baseball career included being named MVP three times and he played in five World Series Games. Hank Greenberg was baseballs first Jewish baseball player in the Major Leagues. He had a very impressive batting average and was named to play in four All-Star teams. Playing for the New York Giants for 22 years, Mel Ott was the first player to hit 500 home runs. Mickey Mantle was, and still is, considered one of the best baseball players of all time. He was a switch hitter who was known for his speed and agility on the field.