by Miles More Magic » Apr 11th, '06, 00:17
It is cards with pictures on the back that you are after by the sound of it.
Try shops in that aim towards tourists, as these usually have them.
Also, check out some of your decks. Sometimes the printing isn't even, so the borders on the back might be wider on one side. Some people know about one way backs, so if you can avoid the obvious designs, it would be better.
On Daryls Card Sleights DVD, he shows that even some of the Bee backed decks can be used in this way.