McVitie Weston valve collection, Tungsram valve, type 77
- Made:
- 1933
Tungsram valve, type 77, marked U103, (RMW/G148 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1933.
Tungsram valve, type 77, marked U103, (RMW/G148 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1933.