A very clean example of an electric Brillié master clock.
In working order, with central seconds hand.
The clock is mounted on a slab of white marble (original), surrounded with its original oak case with nice patination.
the clock is original working on 1.5volt (new) battery and is invisible behind the dial.
By swinging the pendulum, the magnet pendulum is going in and out of a wired wound coil, it will create an electric magnetic field.
This is the (mother) master clock, with options to connected some slave clocks.