A closed box covered with a crystal pyramid upon a platform is shown. A borrowed coin which also may be marked by the spectator is placed in a holder held vertical outside of the pyramid.
Covering the pyramid with a handkerchief the powers of darkness take hold and removing the handkerchief the coin is no longer visible in its holder.
The crystal pyramid is removed and opening the lid to the box the same borrowed coin that has been marked for identification is found within!
This is one of those effects that when you work the mechanics you just can't believe the function of the apparatus! Includes handkerchief and illustrated instructions. From 1994 and in very fine condition.