Time Telegraph produced a clock with an unusual movement that used low voltage to drive the clockworks. Few are known to exist. Below are some pictures of the movement and a video of one in operation.
https://www.youtube.com/watch?v=uUHJnd5PsME&feature=youtu.be
Fascinating movement considering it was patented in 1883.
It really is interesting. Do you think Rodney would part with his? Does he have a case for it?