magician shows two coins, one of 2 euros and one of 50 cents euro, places
both coins under a handkerchief, withdraws the coin of 2 euros and places
it on the handkerchief. He lifts slightly the handkerchief to show that
there is a coin of 50 cents euro below, but incredibly there will be
one of 2 euros, and when he looks above of the handkerchief, we will
find one of 50 cents euro. After he places both coins (2 euros and 50
cents euro) in the palm of his and, withdraws the coin of 2 euros and
places it in his pocket, and instantaneously he shows that the coins
changed places. One of 2 euros is in the hand and one of 50 cents euro
is in the pocket.
If he wishes it to realize the effect repeatedly.