Scotch and Soda by Roy Keuppers

Many effects are possible with this classic set.

Here’s the standard routine: A U.S. Half dollar & a Mexican Centavo are shown. Both coins are placed in an open palm of a spectator. The spec is asked to close his or her hand. The Magician asks the spec which two coins are in their hand. The spec will reply “ A U.S. Half dollar & a Mexican Centavo. When they open their hand, they will find a U.S. Half dollar & a U.S. Quarter. The Mexican Centavo has mysteriously changed into a U.S. Quarter .

This is a very popular trick used by Amateur & pro Magicians around the world.