McVitie Weston valve collection, valve, type R
Valve, type R, vertical electrode system, glass envelope smashed, Ni* and black moulded base with 4 pins all of different length, (RMW/Y34 - McVitie Weston number), by Unknown maker.
Valve, type R, vertical electrode system, glass envelope smashed, Ni* and black moulded base with 4 pins all of different length, (RMW/Y34 - McVitie Weston number), by Unknown maker.