Princess Card Trick
The Princess Card Trick is a magic effect where a small packet of cards is shown to a spectator and told to mentally think of one card. The cards are turned around and the magician pockets on of the cards. The faces of the remaining cards are then shown revealing that the spectator's mentally selected card is now not among the group.
- See Stanyon's Magic, Vol. 5, no. 10, sept. 1905, page 79, Hardin's Princess Card Trick (with my own additions)