4 entries in Cards / Principles / Pointer Anomaly
  
Creators Title Comments & References Year Source Page AA Categories
Karl Fulves Three-Card Monte No. 12, up-down arrows on cards used
1980 The Children's Magic Kit 12
Martin Gardner MG Trio #3 orientation of head on QS and KH used for monte type guessing game, turning on vertical or horizontal axis ("The principle behind this trick has floated around a while.")
Variations 1989 Prototype 20
Robert E. Neale Heads Turn orientation of head on picture cards
Inspired by 1989 Prototype 22
Caleb Wiles Clue Multi-phase routine where the magician allows a participant to determine how "clue cards" (a few openly marked cards) will be turned to create a playing card. The clue cards then turn into the mate of that card.
Inspired by
  • "The Pointer Anomaly" (Paul Harris, Genii, Feb. 2009)
2015 Semi-Automatic Card Tricks — Volume 9 28