George Dorne, Turtle mystery clock, round, white marble basin with brass trim and reservoir, applied Roman numerals, and resting on cast brass paw feet, quartz movement, the turtle pointing to the time and controlled by a magnet attached to the movement

Jean Eugene Robert Houdin, Paris, fifth series mystery clock, ebonized rectangular ogee molded wooden base topped with a gilt brass platform, the center with short column supporting the square beveled glass dial with pierced brass hands, enclosed in an ornate, cast gilt frame with cartouche and floral garlands at top, 8 days, time only movement with platform escapement hidden in wooden base, and with gilt brass bottom cover, c1860