McVitie Weston valve collection, Radio Micro valve, type D.E.R.
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Radio Micro valve, type RT, pinch marked N60N
Science Museum Group
© The Board of Trustees of the Science Museum
Radio Micro valve, type RT, pinch marked N60N, special 4-pin metal and black moulded base, dumpy cylindrical envelope with top pip, heavily gettered, (RMW/E41A - McVitie Weston number), by Unknown maker.
