Three coin boxes. Two are empty. The spectator examines and fills the third with half dollars. A three-shell game for the millennium – the coins continually vanish from the box they’re in and appear in one of the other boxes. An empty box is pushed aside. just two boxes are left in play, one empty, one with the coins. The coins vanish from one box, skip the second box and the spectator finds them way over there in the discarded box!
