A classic three shell game with two pennies, a nickel, and three covers.
The spectator finds it impossible to follow the silver coin, even when its cover is marked.
One by one, a coin and cover are eliminated from the game leaving only a single covered coin.
The spectator is asked to guess whether it is a penny or a nickel.
However he responds, he is shown that his guess is wrong!
The final coin has magically become a dime.