Mexico still has 127/220V (60 Hz) as the standard voltage and a few places, including as mentioned Brazil but also Saudi Arabia, have 127/220V (60 Hz) as one of several systems.
It was once Soviet standard as well (at 50 Hz) and I'm told old systems survive in a couple of places where Soviet engineers were active, like Vietnam. Along with American 120V, French 110V and European 220V of course...
Quite possibly one can find this voltage in other little known corners of the world.
