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  With a beautiful solid mahogany case and the most unusual clock mechanism I know of, this is a perfect mantle piece.
It also has a passing hour strike bell with a wonderful sound. 		It utilizes a rolling "plinth" instead of a ball. I tried several times - unsuccessfully - to cut a typical Congreve zig-zag ball track. It has a 60-second period (30 seconds to roll one direction). The sharp-pointed axle self-centers, and trips the escape arms at each end of the track.
 
  The "escape wheel" has only two teeth. Every 30 seconds, when the rolling plinth trips the mechanism, it rotates 180-deg., tilts the track the other way, and advances the minute hand a half-minute. The plinth starts rolling the other way, and the cycle continues.
The clock is spring-powered, and is unusually driven through the hour wheel. It was "designed to run 8 days" on a winding, but after about three days, the spring doesn't have enough power to tilt the track.
the Congreve
My first "original design"; a very unusual wooden Congreve clock, styled after the Sinclair-Harding version. True to the original, it's a terrible timekeeper but is absolutely entertaining to watch.

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