
Click to Enlarge Image
The magician show the audience a Chinese coin, both sides of which are black. He rubs it a little, and both sides of the coin turn red. Another rub, and both sides of the coin turn blue. The coin can be examined.

The magician show the audience a Chinese coin, both sides of which are black. He rubs it a little, and both sides of the coin turn red. Another rub, and both sides of the coin turn blue.
The coin can be examined.