This antediluvian trick can makes you feel happy or sad. Indeed, for many years, hucksters use it to steal money.
You have three shells on a table in front of you and you put a small ball under a shell. You displace slowly the shells and the ball is in another shell. Do it again with only one hand, the ball move again.
Of course you can loan the equipment for examination.
Very easy to use.
A superb equipment.
With this golden shells, it is a spiffy device.
Delivered with 3 golden shells and 4 various colored balls and a shatterproof case.