Cooker switch-fuse, 30 amp, "Botrade", ironclad with wooden round-pin plug by MK Electric, issued by Preston Corporation Electricity Department, 1920s Cooker switch-fuse
Bakelite plug and socket with original box. When the plug is removed the cover of the socket is turned by a spring to conceal the contacts, c.1920 Bakelite plug and socket with original box 1920