In one hand the magician has a white brass chip, the other hand a black one.Both hands are closed and the chips change color. The same is repeated witha playing card between the chips. Again they change color. The audience isconvinced the chips are white on one side and black on the other. The magician shows both sides again but now one is GREEN & YELLOW and the otheris RED & BLUE! Manufactured in brass by European craftsman.