Sliding coin box 1980 

The performer puts the coin in one side of the box and closes both doors. He “unknowingly” flips the box over and the coin rolls to the other side. He opens the top door and claims that the coin has been stolen! Everyone shouts to open the other door. He “unknowingly” knocks the box over, the coin rolls back and opens the other door – no coin! Repeat this until the kids pop out. The performer finally understands what the audience is saying and opens both doors. The coin really is gone! The performer turns around as he looks for the missing coin and there it is – stuck on his back! Comedy is worth its weight in gold!