Houdini Scotch and Soda

A coin trick precision made from a special Houdini Coin and a Mexican 20 centavo piece. You put both coins into the spectator’s hand, in full view. 

The gold coin disappears and can turn into a "MAGICIANS'S COIN". 

Routine shows you how to win a "Scotch & Soda" each time you do the trick. 

Can be freely examined at end of the trick. 
It is entirely mechanical and easy to do.