McVitie Weston valve collection, Tungsram valve, type P100/1000
Tungsram valve, type P100/1000, marked X9.499, (RMW/E67 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd..
Tungsram valve, type P100/1000, marked X9.499, (RMW/E67 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd..