1. A spectator is given three coins: a penny, a nickel and a dime, plus a small box which you the magician explains is the Vault.
2. When you turn your back, the spectator places any coin in the Vault and closes it. He then takes the higher value coin in the right hand and the last coin in the left hand.
3. When you turn around, you can instantly tell the spectator which coin is where. Could it be telepathy?