I have always loved this trick and wanted to have one personally which I could never find. This is one of those tricks where the dealer and the collector in me collide. Unfortunately for me (and fortunately for you) the dealer side usually wins out.
This is a magnificent prop from Collectors Workshop which is long unavailable. In effect a spectators watch is borrowed and vanished. A heavy canvas bag is introduced and within the bag is removed a beautiful locked walnut chest. The chest is opened and a stunning brass cage is removed. Sitting on the perch in the cage is the spectators watch!
How does it get any better! In excellent condition and you will look hard to ever find one (I know). Scarce!