Antique Junction Boxes in Lviv
I have found quite a few prewar electrical junction boxes in Lviv. They are typically located on the left-hand side of a building's entrance way, near the front door. They are not quite obsolete as I think they still function, but the inscriptions are no longer relevant.
M. Z. E we Lwowie
S. Kleiman Warszawa
M. Z. E. stands for Miejskie Zakłady Elektryczne (Municipal Electric Plant)
Własność miejskiej elektrowni (Property of the Municipal Power Station)