Good used condition with some small gauges, English and German instructions!
Paul Picha (master craftsman from Austria) made some wonderful electronic items, and this device is no exception.
It is a solidly made prop that allows you to detect which card is the spectators, supposedly due to their fingerprints. As you place different cards into the slot at the top, everything is quiet until suddenly the bell goes off, and of course it’s their card.
Well, made, easy to do and a bit different.
You will need to provide a 9V Block Battery and a regular Red Rider Back Bicycle deck.