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ID = 12538
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
  Ca. 1925 up to 1945 very rare. ***
Identical to ARS6 = CV1317
Similar Tubes
Normally replaceable-slightly different:

Base SPECIAL TUBEBASE in general (Codex=sp) Base on each end.
Was used by Military and/or Government
Filament Vf 4 Volts / If 0.3 Ampere / Direct
Description Double ended tube - 2 pins at one end for plate and grid, three pins at other end for filament and screen connections.

ARS6 was the original UK army name for the S625. It was later designated CV1317. 

Information source Taschenbuch zum Röhren-Codex 1948/49   
ARS6: Tabu Röhren-Codex, 1948
Anonymous 15 Collector


Usage in Models 1= 1933

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

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