Open the Billfooled from the left. This will display compartment "A." Have wallet on table with bottom facing you, now twist wallet around so bottom is facing guest. Have the spectator put his hand on it for one second, now you open wallet from the right and it will display compartment of "B." Because you have twisted wallet so that it faces his as if you opened it from the same side. Some oxidation on metal accent, else in very good condition.