These precision gimmicked coins by Johnson Products, are made from a U.S. Kennedy Half and an exotic looking oriental coin. From one side it looks like an unprepared half, and from the other it appears to be an oriental coin having a round hole in the center.
Effect: Performer exhibits two coins, one is the oriental coin and the other is a half. Now both of the coins are dropped into the window envelope and the magician moistens the flap preparatory to sealing it. Next the performer removes the oriental coin and places it on the outside of the envelope while he seals the quarter inside. The ends of the envelope are now folded over the oriental coin. The magic word is spoken and the envelope are is turned window side towards the spectators, who are amazed to see the Chinese coin on the inside. The quarter is now outside the sealed envelope.
Spectator may tear open the envelope and remove the oriental coin.