Turn of the century medical device, some kind of quack shock therapy machine, missing the hand probes, looks like there was a door w/ lock on the front lower compartment to hold the probes, there's a brass slot for a locking pin, black Bakelite faceplate, solid walnut case w/ brass hardware, excellent condition, $70 OBO, phone 512-398-7684.
An alternative, but still electrical explanation was offered by Paul Keyser. It was suggested that a priest or healer, using an iron spatula to compound a vinegar based potion in a copper vessel, may have felt an electrical tingle, and used the phenomenon either for electro-acupuncture, or to amaze supplicants by electrifying a metal statue
I did footnote about the Bagdad Battery on that page but I really suspect that electricity was known by some special
people even further back in history as you suggested. I remember reading several years ago about a lost city that preceded Babylon and there was evidence of battery jars there.