Pendulum Important Nineteenth Mysterious

mysterious clock in a cabinet body double oak. The lower part consists of four drawers including one in the cove. At the top, a glass door discovers a pendulum clock on a mirror background mercury. The pendulum has a height of 138 cm and a diameter of 47 cm, weighing 14 kg. The bezel is notched on the edge. This balancer is composed of several pieces of glass, the scale of hours and the hands are reflected in the mirror mercury. There is no suspension for retaining the balance, it simply rests in the niche of the lower cabinet. There is no apparent clockwork system. This furniture from a large coffee Blois where he was the attraction. It is sold in the state, as it is out of the barn where it was stored for forty years. Only damage to deplore the cracked mirror. Unfortunately I do not know of this pendulum operating system, which remains a mystery. Feel free to call me for more information 06 07 57 86 68.