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ID = 33231
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 very rare. ***
Identical to VT114_GPO = CV1682

Base British-7-Pin, old (M7A)
Was used by Telephony
Filament Vf 4 Volts / If 2 Ampere / Indirect / Specified voltage AND current AC/DC

Output pentode. Manufacturer and commercial tube type number unknown.

Information source -- Collector info (Sammler)   
VT114_GPO: R.O.
Rudolf Osterkamp

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