A small French Art Deco chrome electric table clock, Bulle Clock, circa 1920.
The 8.5-cm octagonal dial has Arabic numerals and is signed BULLE CLOCK Breveté S.G.D.G. patented. The straight hands are lacquered black.
The pendulum is suspended by a steel suspension spring and has a electric coiled bob running over a curved electro magnet. The oscillation of the pendulum switches the magnet on and off, keeping it swinging. This oscillation is used to turn the hands.
The chrome rectangular four-glass case has a stepped top. It has doors to the front and back. The stepped base is raised on bracket feet.