The effect relies on simple gimmick and tricks can be performed with it that are self - working , requiring almost no skill .
Scotch and Soda is a magic effect involving a copper coin and a silver coin which appear to transpose in the spectator 's hands .
The effect relies on simple gimmick and tricks can be performed with Scotch and Soda that are self - working , requiring almost no skill .
Scotch and Soda is a magic effect involving a copper coin and a silver coin which appear to transpose in the spectator 's hands .