This is one of the rarest items produced by Tenyo, who are mainly known for magic tricks. This playing card box can give an electric shock when opened. It is in untested condition. 
 
This comes with our exclusive OldJokes.co.uk Fact Card on the history of Japanese-made novelties.
 
Condition: Good, though there are some marks and wear to the card and case. The "Foreign" sticker has come loose and is now inside the case. The drawer of the box is clearly marked Tenyo with a patent number.  
 
This is a vintage item and is being sold as a collectible, not a toy.