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This midget 400 day clock was made by Koma (Konrad Mauch) in Germany in the late 1950s. It is 7 1/16 inches tall (to top of finial) and 4 11/16 inches wide. The dial diameter is 2 15/16 inches (including bezel).

The pendulum on this clock turns much faster than that on many 400 day clocks – 15 beats per minute. By comparison, standard size 400 day clocks make 8 beats per minute, and the Kern miniature makes only 6 beats per minute.

This album has more photos.

Here is a movie of this clock in operation

Here is a movie of this clock and a Kern miniature together:

Horolovar back plate no. 1393B. Suspension unit similar to 38 but uses smaller fork. Suspension spring .0022 inch thick (measure replacement spring carefully – the first one I tried was labeled 0.0022 but made the clock run too fast and was actually 0.0023 inch thick). The movement uses a pin pallet escapement.

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1. Koma Miniature 400 Day Clock
2. Koma standard 400 day clock, painted with flowers, 1950s.
3. Gear Rotation Speed in the Schatz Standard 400 Day Clock
4. Schatz Standard 400 Day Clock with No Name on Dial, ca. 1950
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