The magician begins by saying that "Doing all these coin tricks my coins become tarnished and I found a way to keep them clean."  He then takes an eraser and starts rubbing on a half dollar where suddenly it starts to wear away!  This continues with the actual visual changing of the coin in its appearance.  This appears to be true magic for the way it looks to a spectator.  This includes an eraser and the special coin along with 4 pages of illustrated instructions from Mr. Roth.  Condition very fine.