This mantel clock, made by Kieninger & Obergfell in Germany, is very similar in principle to the Estyma clock, but is later in design by around 15 years (i.e. around mid 1970s). It has a glass dome to protect it. This clock has two coils, a 'trigger' coil and an 'impulse' coil, but they are mounted together on the base in the same cylindrical casing.
The curved bar on the pendulum is a hollow rod containing a magnet at its right hand end. As the magnet swings in and out of the coil assembly, the current induced in the trigger coil switches on a transistor and delivers impulse through a second coil.
The clock mechanism, which is visible through the aperture in the dial, is typical of the ATO design from which it derived. A pawl attached to the pendulum moves an index wheel round by one tooth on each right-to-left swing of the pendulum. The circular movement plates are 1.5 inches in diameter.
The electronics are contained within the coil assembly. The battery compartment is underneath the base.