power supply unit

Vintage military auxiliary power supply unit companion piece to the Wireless Set No. 19 Mk III system, labeled as « WIRELESS SETS (CANADIAN) 19-MK III SUPPLY UNIT NO 2 ». The metal housing features heavy-duty electrical sockets, toggle switches (« VIBR. / OFF / DYN. »), warning inscriptions in English and Russian regarding 12/24V battery voltage switches, and an attached heavy rubber-insulated power/interconnect cable coil.