This Sleeve Dropper was invented by Patrick Page and regularly used as part of his act.
The Sleeve Dropper is a device originally intended to release a Jumbo size coin into the sleeve of the performer.
If the performer’s arm is in a bent elbow position, the coin will remain in the sleeve until the performer’s hand is dropped to his side.
At that moment the coin will drop down the sleeve into the performer’s waiting hand, to be produced or revealed as the performer desires.
Great for using to switch a pack of cards that a spectator has shuffled with a stacked deck