Two general purpose triodes designed for operation from a 6 volt accumulator or dry batteries. Equivalent to the American 201A except for lower filament current. 6.0 volt directly heated cathode.

Physical Description

Conical glass bulb cut away to show the internal structure of a triode valve with a horizontal electrode structure. American style 4 pin (UX) base. Mounted on a display block. Conical glass bulb with European style 4 pin base. Contained in cardboard carton (probably original). Carton has dark brown text on an orange/yellow background with a stylised radio aerial and a half-tone picture of a typical valve on two opposite faces.

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