Tell-A-Vision by Royal Magic

Discern their thoughts with uncanny accuracy. The spectator receives a small cube and a snug little box. Each of the cube’s six sides carries a different design. With the magician turned away, the spectator freely chooses any design and seals the cube inside the box. Nothing more than handing the box back is required. The magician immediately reveals the chosen symbol.
It is effortless to perform and astonishing to witness. No sleight of hand. All props may be examined. Manufactured in the USA.