The magician displays three Mummies of three different colors. The Mummies are handed over to a spectator, along with a box (Coffin), and the spectator is invited to place any Mummy he fancies into the Coffin, close it, and place the Coffin on the table. The other two Mummies are concealed by him, so that there is no clue to the color of the Mummy placed in the Coffin.
The performer reveals the color, without touching the coffin, or even going near it.
Can be repeated as often as you like, and everything can be examined. A very clever effect, attractively produced, and a very reasonable price.