Yes, it is Electro-mechanical. The clock is like most spring wound clocks, but with a solenoid that cycles every few minutes. The solenoid moves an arm to wind the spring. Electrical power is through a set of points and it draws a fair bit of power. As the arm swings towards the electro-magnet pole, the arm also opens the points. This stops the flow of electricity until the arm swings back to the rest position and closes the points for the next pulse. Made by Geo. W. Borg Company of Chicago.
I had to do a small repair to the time setting stem, and the clock is put aside for a day or so. Once it is ready to run, I will try to take a video of it.
Pierre