Blank Face Bicycle Cards (Red) by USPCC
These are 52 standard red Bicycle back cards with blank faces.
Includes instructions by Joshua Wilde for an effect where a card is chosen by rolling a set of invisible dice and counting down to the random number generated by the participant. The selected card is lost and shuffled back into the pack. To find the selection, the magician casts a shadow over the deck and spreads it face-up...only one card is seen in an otherwise blank deck...the very card selected by the astonished participant!