This rolling ball clock in the form of an octagonal tower is a masterpiece of mechanical engineering which combines the function of a music box with that of a figural automaton. In exactly one minute a rock crystal ball circled the towershaped clock 16 times while a second ball inside the case was raised. When this happened, the hand moved on and Saturn struck a bell with his hammer. Apart from these special technical features this exclusive clock also boasts an ambitious iconographic programme.