This appears to be a plastic cased, one jewel, transistor switched, magnetic repulsion Balance Wheel Impulse Motor made by/for Bulova France under license from ATO. The body of the wall clock is a K&G Lunéville France faïence plate. It’s noteworthy that the K&G mark on the back of the plate was only used from 1880 to 1922, whereas, the transistor was invented in 1947. Add a Watch required me to put a Manufacture Year so I picked 1965. What I know is that transistors were invented in 1947 and the ubiquitous quartz movements became popular around 1980.
BTW, this runs on one C cell battery.
Not sure how to classify this one, I'm not sure it predates 1980.
This is what I found on ATO.
http://www.chronometrophilia.ch/Electric-clocks/ATOtextenglish.htm
With the help of Marga at infofaience.com, this was found. The example found here was licensed to JAZ and is listed as a pendulum movement. It was apparently available in their catalog from 1975 to 1976.
Happy to include it under the generic 'clock' model category.
Additional photos of the movement without the cover would be great.
So an electro magnet movement.
I wonder if 'O8' is a date code for clocks?
Maybe N 08?