This is a vintage pre-owned item that came from a very old magician’s estate. It comes with its original packaging envelope and gimmick. The original instructions are missing. The envelope is toned from age, the paper is brittle, and it has tears. This would be for the collector of vintage card effects.
The effect is where a playing card that is held under a handkerchief by a spectator is dropped into a glass of water from where it vanishes. The handkerchief is removed and the glass is seen to be completely empty as is the handkerchief.