McVitie Weston valve collection, Tungsram valve, type APP4G
- Made:
- 1939
Tungsram valve, type APP4G, marked TEST SAMPLE, pinch marked 436/F, (RMW/Y304 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1939.
Tungsram valve, type APP4G, marked TEST SAMPLE, pinch marked 436/F, (RMW/Y304 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1939.