This is a vintage pre-owned item.
Created by George Boston the effect is as follows: The performer exhibits two decks of cards, one red, the other blue. He picks up one deck and shows it to be quite ordinary, both back and front. He asks a spectator to assist by placing the deck behind their back and cutting it any number of times, completing the cut each time, then to remove two or three cards from the deck and then place them in their pocket without looking at them.
The performer then requests the spectator to square the pack and bring it from behind their back held in such a manner so that the performer cannot get a glimpse of any card. This deck is then placed back into its case and put aside.
Performer takes the other deck from the table and shows that both the back and front are quite ordinary except that the backs are a different color from the first deck. This is to convince the audience that only two decks are used, one by the spectator and one by the performer.
The performer then places this deck behind his back. He cuts his deck the same number of times as the spectator cut their deck and then removes the same number of cards from his deck as the spectator did from their deck and then discards his deck as well.
The spectator then shows their selected cards, one by one, and the performer shows his in the same manner. The audience is amazed to find that the performer has matched the spectator’s cards with his own! Truly a miracle, because neither one has looked at any of the cards while the trick was in progress!