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ID = 69805
Tube type:  Damper, booster, flyback diode 
Identical to 19AU4GT = 19AU4
Similar Tubes
Heater different:

Base Octal (Int.Octal, IO) K8A, USA 1935
Was used by Radio/TV-reception etc.
Filament Vf 18.9 Volts / If 0.6 Ampere / Indirect / Series, ~ = (AC/DC defined current)
Information source Essential Characteristics, GE 1973   

from Just Qvigstad

Usage in Models 26= 1956? ; 29= 1957? ; 2= 1958?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):57

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