Vintage Kundo Electromagetic skeleton clock 6 jewels working well

This is one of my Kundo electromagnetic clock collections. It has the 6 jewels movement with an updated EM impulse coil and battery.system.
It is in great working condition and keep accurate time. The only flaw is at the front right lower corner the panel glass has an about 1/4" crack but still solid and not extending.
It takes a C-size battery and it has been more than a year and half since last replacement and still working well.
Any questions please ask. Thanks for looking!