½ Dollar (National Baseball Hall of Fame)

The 2014 Baseball Hall of Fame Half Dollar

In 2014 the U.S. Mint did something it had never done in more than two centuries of striking coins: it made one that wasn't flat. The Baseball Hall of Fame half dollar dips inward like a catcher's mitt on the heads side and bulges outward like a baseball on the tails side. The shape isn't a gimmick — it's the whole point.