Four in One Eisenhower Dollar Set by Tango

The magician shows four Eisenhower dollar coins in his hand, then takes one of the coins and brings his pocket, when you reopen your hand has 4 coins again.
Returns to remove a coin from his hand and takes her to his pocket but when you open your hand has 4 coins. Repeat this 2 times and always has 4 coins.
Finally it shows the 4 coins in his hand and takes a pocket to carry it when you open your hand and the other coins have disappeared.