The back design features geometric memory devices from master mnemonists, Gregor von Feinaigle and Giordano Bruno, playfully highlighted by characters found in the Memory Arts System. While classic and simple enough for all uses, and certainly a historical throwback collectors' item, the Bicycle Memoria Deck is much more than it appears at first glance.
 

 
The North Star Design almost imperceptibly makes the Memoria Deck one-way. The smaller Feinaiglian grids and Lullian Wheels in all four corners allow users to apply a subtle marking system with a plethora of variations and uses, dependent upon needs and preferences. (The cards are not marked - you can use the grids to either mark values and suits, or card locations if you are using a stack system.)
 

 
Users of the Memory Arts System for mem-deck work will enjoy the benefits of using the larger center grid to quickly create stack flashcards. (If you are not familiar with the Memory Arts System, an included info card explains the grid layout so that you can use the deck for flashcards for any stack
 

 
Printed by the United States Playing Card Company
 

 
Bicycle Classic stock with magic finish
 

 
Special double-backed gaff included
 

 
Info card explains the deck's hidden memory devices
 

 
Custom yet classic Bicycle custom seal
 

 

 
 memorized with any system, even by rote!)