The children start clapping their hands and the “mercury” of the Klapp-O-Meter rises. When the sound of the applause decreases, so does the “mercury”. When the clapping reaches its climax, the...

With this mechanical holder pinned under your coat you can any time during your act secretly steal and produce about a dozen coins (in one big load). Holds any size coin.

This wonderful effect is closely associated with Billy McComb. A red silk is changed into a yellow silk as per the description above. Performer explains how it is done, but the more he explains the...