Old Austrian radios (until around 1970 I think) had an even weirder voltage setting... 150V! I've never heard about a 150V system being actually used anywhere, but one guy on the internet claimed he once saw a black ungrounded receptacle labeled "150V" in a rural transformer station once. He admitted not even the PoCo guy could tell him what it was intended for... but it was live at roughly 150V!
So I assume some independent rural systems started with 150V.
