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ID = 14968
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Triode, vacuum   Audio Frequency 
Identical to VR37 = CV1037 = NR31 = AR17 = 7413 = 10E/9598

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Military and/or Government
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC

Made for the Royal Air Force - UK.

Information source Babani, International Radio Tube Encyclopaedia   p. 62 & 63
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   p. 32
Taschenbuch zum Röhren-Codex 1948/49

vr37_so.png VR37: rtt
Anonymous 10 Collector

Just Qvigstad

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