This clock is hand made in Germany. The mechanical brass movement is driven by two weights and time escapes with the tick of a traditional pendulum. The cuckoo call sound is made by two wooden whistles with bellows inside the clock case. The cast iron weights in the shape of two pine cones apply weight to the drive chain which feeds up and over the mechanism gears. One drives the time and one the cuckoo call. The chains are made of tarnish resistant brass.
This special model has carved wooden weights, wooden dial, wooden hands, wooden numerals, and a wooden cuckoo bird!