The effect is the normal three card monte, in which the spectators are invited to keep their eye on one particular card, but somehow always seem to lose track of it.
 
This version is based on a three card trick performed by English street magicians for many years. One or two extra moves have been added, plus a climax, in which the card they have been watching vanishes completely.
 
Condition Notes:  Overall complete and in very good condition with only minor age-related wear and possibly some light discoloration.