McVitie Weston valve collection, Tungsram valve, type HL4 plus
- Made:
- 1936
Tungsram valve, type HL4 plus, marked 606, (RMW/F78 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1936.
Tungsram valve, type HL4 plus, marked 606, (RMW/F78 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1936.