The Charmed Treasure Chest by Thomas Pohle: Special Edition #5 of 24 made

The spectators choose and try 4 of 5 keys leaving you only one. Yours opens the box for the awaiting treasure!.

 From Thomas: “NO force. The viewer freely chooses the key. It is a technical masterpiece, the viewer can examine every piece very carefully, he cannot and will not find anything-yet eh demonstrator will be able to open the box with any key.  There are no secret switches or sliders used on the box.  If you want it can be repeated immediately.  The chest if finished with real wood veneer, velvet on top and velvet in the drawer, with real hinges-a real treasure.

This takes many hours to build. #5 of 24 made. Brilliant and unique method.  Includes signed certificate. Never used.