"The sundial rotary mystery clock is an uncommon timepiece with a unique design that resembles a sundial. It features original, aged finishes, with an ivory-painted base and a fleur-de-lis decal, while the top is made of brass-finished steel with a copper chapter ring and central sun riveted on.

Herman F. Lux, the inventor of rotary clocks, manufactured most of them in the "tape measure" style, with the chapter ring wrapped around the rotating top of the clock. However, the sundial clock can be displayed flat like a shelf or hung on a wall, as per its patented design in 1938.

In keeping with other rotary clocks, the sundial clock doesn't mark minutes but has five and fifteen-minute increments with Roman numerals at the hours. Its single rotating pointer is fashioned like a sundial gnomon. This mechanical clock has a brass movement and a folding, winding key located at the bottom.

This clock is a rare find for collectors or enthusiasts seeking a unique and distinctive piece of horology. It provides a glimpse into the innovative mind of Herman Lux and the history of clockmaking in Waterbury, Connecticut."