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ID = 14091
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 very rare. ***
Identical to DEL210
Similar Tubes
Other characteristic (electr. data):
First year Oct.1928 - - Manufacturers Literature Date of Marconi Publication No. 520A.

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =

Dull emitter, general purpose triode.

Dimensions (WHD)
incl. pins / tip
41 x 95 x mm / 1.61 x 3.74 x inch
Literature - - Manufacturers Literature   Pamphlet 243
DEL210: Manufacturer's Literature
Emilio Ciardiello

DEL210: own collection
Peter den Boer

Usage in Models 1= 1927 ; 1= 1929? ; 1= 1929

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

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