Three black blocks, decorated with Asian characters and three playing cards are stacked on the table. A chimney decorated in red and gold with three doors is placed over the cubes. The magician challenges the audience to keep track of the Queen, which jumps up and down the stack of blocks each time the doors are opened. This is Thayer’s mechanical version of the popular Three Card Monte effect. Circa 1930. Scarce. Condition: Very Good.