Lock It

A twenty-dollar bill enclosed in a plastic holder is displayed. The holder is secured by a padlock, five keys are placed into a glass goblet. Only one key will open the lock. Four spectators are each given a turn at picking a key. The fifth key is left for the performer. The person that holds the key that opens the lock gets to keep the twenty dollar bill. Each time, the key that has been left for the performer is the key that opens the lock. Includes the instructions. Very good condition.