Delta Ring Box by Dave Powell

EFFECT: The performer places a wine glass on the table and borrows a finger ring from any spectator. The ring is placed in the folds of a handkerchief and given to the spectator to hold over the mouth of the wine glass. He can actually feel the ring through the handkerchief and is told to hold onto it tight. The performer also removes a small locked wooden box and sets it in full view of the audience. The spectator is asked to drop the ring into the glass. The spectator lets go of the ring and it is apparently heard as it clinks into the glass. The performer immediately whisks away the handkerchief from the glass and it has vanished!