Chinese Boxes Set

The magician borrows a coin from a spectator and has him sign it to make it recognizable. He then puts it inside a transparent case, closed firmly with four elastic bands. The case is wrapped in a handkerchief and given to a spectator. Once the handkerchief is unfolded the coin will have vanished and the case be empty. The magician pulls out from his pocket a box. He opens it and shows that inside there is another box. Opening even this one he reveals another case and at last another one. He finally opens the last one, and inside there will be the signed coin.