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ID = 18280
Brand: Castilla; Madrid
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to URL200
Similar Tubes
Normally replaceable-slightly different:

Base Europe side contact P8A (Au P, 8SC) (Codex=Sc)
Was used by Radio/TV-reception etc.
Filament If 0.2 Ampere / Specified current AC/DC ~ = (Series working)

Erwähnt im Buch Radiolampen Vade-Mecum, P.H.Brans, 1942

Information source Taschenbuch zum Röhren-Codex 1948/49   

c1_sock~~3.png URL200: Röhrentaschenbuch, Funk-Verlag, 1951
Anonymous 15 Collector

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