By testimony of the catalog description this is invaluable to all performers who do mind reading and other mental test since by the aid of this ingeniously constructed apparatus envelopes folded papers cards written on by the audience etc. can be exchanged for duplicates under the very noses of the spectators.

By special arrangement of spring loaded flaps held in place by basket handle in the laid down position billets are dropped in and when performer takes handle to vertical position the flaps spring down covering billets and bringing into view the prepared billets.

This vintage mechanical apparatus was formerly owned by Professor Isley of the Famous Anti-Gravico Trick later taken by many manufacturers and premium offer companies the world over. In perfect working order.