Air-Pressure or Revolution Turnover is a classic way to reveal a chosen card.
You throw the deck on the table and the chosen card which is on top unbeknown to the spectators turns face-up thanks to air-pressure.
The first description of this sleight appeared in "The Boy's Own Book" by William Clarke (1829).
Testament de Jérôme Sharp (1785) has a trick where you control four selections to the top and basically do the air pressure turnover four times. The difference is you don't drop the pack, you jog the card over with the thumb and swipe your hand down so that the card flies off and lands face up on the table.
Variations and publications
- Turn-over in The Boy's Own Book, page 396 (1829)
- Various Modes of Disclosing a Discovered Card - Third Method in Modern Magic by Professor Hoffmann, p. 45 (1876)
- To Cause a Card to Show itself on the Top of the Pack in Sleight-of-Hand By Edwin Sachs, p. 101 (1877)
- in New Era Card Tricks By August Roterberg (1897)
- The Revolution in The Expert at the Card Table By S. W. Erdnase, page 108 (Dover edition) (1902).
- Hofzinser's Card Conjuring (1910).
- The Revolution in Stanyon's Magic, Vol. 12, no. 12, September, p. 94 (1912)
- Card Discoveries (4) in The Book of Magic By Walter Gibson, page 142 (1927)
- The Stubborn Card in 84 Card Tricks By Hugh Morris, page 32 (1936)
- Aerial Turnover in Basic Card Technique By Anthony Norman, p. 49 (1948)
- Think of A Number in Card Conjuring By Wilfrid Jonson, page 34 (1950)