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ID = 49065
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Triode, vacuum   Universal 
Identical to VR109A = NR55 = CV1000 = AR7
Similar Tubes
Normally replaceable-slightly different:
Heater different:

Base British-7-Pin, old (M7A)
Filament Vf 13 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC
Description Same characteristics of VR109 with lower heater current. 
Information source -- Original-techn. papers.   

nr5_1.png VR109A: Manufacturer's Literature
Emilio Ciardiello

Just Qvigstad
VR109A: Manufacturer's Literature
Emilio Ciardiello

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