Here is a gorgeous clock that doubles as a kinetic sculpture to put on a mesmerizing display as you watch the time go by. The Gordon Bradt Six Man Clock is handcrafted in brazed and molten solid brass. Its coiled gears are driven by an electric 4rpm synchronous motor. It has men that pull and push levers and cranks, appearing to drive the clock.
These clocks are pretty rare but you can find them on sites like eBay from time to time.