Zarrow shuffle
Encyclopedia
Zarrow shuffle is a sleight of hand
Sleight of hand
Sleight of hand, also known as prestidigitation or legerdemain, is the set of techniques used by a magician to manipulate objects such as cards and coins secretly....

 technique that gives the appearance of being a normal riffle shuffle, but in fact leaves the cards in exactly the same order. This is an example of a false shuffle. It was invented by magician Herb Zarrow
Herb Zarrow
Herb Zarrow was an American magician influential in the profession for his inventions of unique sleight of hand and card tricks. His skills were held in the highest regard in professional magicians' circles....

circa 1940.
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