A wood panel affair which is two panels with openings that fit together is shown and a currency note (not supplied) is sandwiched between the panels and fastened together with a padlock.
Five keys are shown and shuffled about and if the spectator is able to select the correct one he is entitled to the currency locked within. He selects and fails but the magician is a nice guy and gives the spectator one more chance again he fails. This may continue up to the last key which the magician must of course reserve for himself and it is the one found to open the lock and the magician need not touch any of the keys having the spectator trying the unlocking.
Here's another one of those effects that once you know how it is done you will probably like it even more. Includes instructions. Condition very fine.