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ID = 6720
Brand: Common type Worldwide tube/semicond.
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Double Diode   Detector 
  Ca. 1925 up to 1945 rare.
Identical to VR54 = 1638 = V.R.54 = ARDD5 = 10E/11400 = VT202_GPO = ZA/3056 = EB34 = CV1054
Similar Tubes
Other base:

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ue)
Was used by Military and/or Government
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC

The earlier designation for the CV1054. This tube was also manufactured in Canada and the USA for British Service use.
Original designation VR = Royal Air Force (British)

Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   Page 156
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

eb34_3.png VR54: Manufacturer's Literature
Emilio Ciardiello

Just Qvigstad
Usage in Models 1= 1957??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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