A sheet of glass is placed in the mahogany box which is then closed. A ball bearing is placed on the top of the glass and it then magically sinks slowly through the glass and falls out of the bottom of the box. Everything may be examined. This Davenports item is stamped with a demon head trademark on the inside of the lid. The trick was sold complete with a felt lined storage box. Also illustrated is a Davenport advertisement that makes it clear the firm was not pleased about what they considered to be American ‘rip offs’. The effect and secret is described on page 164 of ‘Further Classic Magic with Apparatus’ by Robert J. Albo.
