The performer shows 8 cards, front and back, calling attention to the fact that they are all identical.  Turning the cards face down in a semi-fan, he offers the spectator a free choice. 
 
The selector places his choice face down on the table without looking at it.  The performer audibly subtracts the face down card form the pile he still holds, letting the spectator supply the answer, "7 cards left". 
 
The performer counts the card left, face up, and lo and behold, there are indeed 7 identical cards left...but they are identical only to each other and don't even resemble the original 8 cards.   
 
Spectator naturally assumes that the card face down on the table is either one of or the only original card, yet when he turns it over, it is the same as the other 7 cards.   
 
The first eight cards have disappeared completely and you have performed a new, clean card miracle!
 
CONDITION NOTES:  Cards are in very good condition. Instructions show typical age-related wear and discoloration but remain fully intact and readable.