McVitie Weston valve collection, Tungsram valve, type V20/7000
- Made:
- 1937
Tungsram valve, type V20/7000, (RMW/A211 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1937.
Tungsram valve, type V20/7000, (RMW/A211 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1937.