A dynamic & truly visual effect where two different cards are placed face to face and then offset as in the diagram.  Visually they become identical.
 
The effect is then reversed and the cards examined.  Only two cards used.  No switches, work it away from the deck!
 
Entirely mechanical, a great addition to your act.
 
Condition Notes:  Overall complete and in very good condition with only minor age-related wear and possibly some light discoloration.