N_Cook wrote:
A charming little video of the innards of one
https://www.youtube.com/watch?v=DYoD25BlSM4
I've agreed to look at /repair? one that is running fast. Anyone
familiar with clockwork mechanisms here? Curious on-demand presumably
battery powered clock-spring winder process it seems.
Not seen it yet, will turn up next week sometime

Can't help with the repair, but wow that thing is weird. I recall a
similar "mechnical" type digital clock that had a complex mechanism to
move shutters back and forth in a 7 segment patterns to display the time.
It lacked the big wheels like this one. I have no idea what company made
this type of clock or when.