Jumbo Three Card Monte (28cm x 20cm)

The magician shows three jumbo cards (a Joker and two number cards) and puts them on the table with the Joker in the middle. Then swap places that obviously shows the Joker is on the right. Remove the other two cards and show the remaining Joker. But it is an Ace! A different card from the previous three cards! Where is the Joker? It's on the other side of the table...