Sleight of Hand
From the Super Mario Wiki
When the game starts, the player will see two hands, one of which is holding a coin. After a short period of time, the hands will move, and the one holding the coin will throw it in the air. The player has to keep his or her eye on the coin to see which hand catches it. If he or she chooses the correct hand, the game is won. However, if he or she chooses the incorrect hand, the game is lost.