The magician borrows a coin from a volunteer in the audience. The volunteer marks their coin, the magician takes the coin and immediately reveals a large saucer like container sealed with rubber bands. The spectator is asked to remove the rubber bands and open the box. Inside is a second box bound by more rubber bands. These are removed and the box is opened revealing a small bag also sealed by a rubber band. The bag is opened revealing the marked coin!
you get 100 pieces individually packed in a polybag w instructions