Spectators see a wooden box with a slot in the top and the bottom. The slot looks like it is big enough for a coin to pass through. However, if a square of glass is placed in the box, it blocks the holes. The magician now proposes the impossible: he will cause a coin to magically penetrate the sheet of solid glass. That's just what happens.
The spectators can see the coin literally melt through the glass with the box held at eye level. A helper catches the coin as it falls out. The box is opened and the glass is intact. Supplied complete with instructions, wooden box and glass square. Individually boxed for easy display and sale.