McVitie Weston valve collection, Radion valve, type X7
Radion valve, type X7, marked 5.25, (RMW/E95 - McVitie Weston number), by Radion Radio-Electric-Company Gebr. Koehler & Co. GmbH.
Radion valve, type X7, marked 5.25, (RMW/E95 - McVitie Weston number), by Radion Radio-Electric-Company Gebr. Koehler & Co. GmbH.