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Pen23

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ID = 25615
       
Country:
United States of America (USA)
Brand: Philco, Philadelphia Stg. Batt. Co.; USA
Tube type:  Vacuum Pentode   Power/Output 
Identical to Pen23

Base British-7-Pin, old (M7A)
Filament Vf 2 Volts / Direct / Battery =
Information source -- Collector info (Sammler)   Trader
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Just Qvigstad
Usage in Models 1= 1936

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

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