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Mullard T.H.4 radio valve, 1936

Electronic Components

1936

Wireless valve, 7405A

Acoustics

1940

Mullard ORA triode, marked with BBC logo

Electronic Components

Mullard Pentone PL38 Valve

Television

1930-1950

Mullard "Wecovalve", BBC-marked

Electronic Components
Possibly Mullard pentode valve VR1 36

Pentode valve

Radio Communication

c. 1930s - 1940s
Mullard photoconductive cell, Type no. 6I SV

Mullard photoconductive cell

Radio Communication

1920s
Mullard D0.6 triode, marked with BBC logo and double red ring

Mullard D0.6 triode, marked with BBC logo

Electronic Components
Mullard PM2 triode valve in box

Mullard triode valve

Radio Communication

c. 1920s