McVitie Weston valve collection, Tungsram valve, type RG250/1000
- Made:
- 1937
Tungsram valve, type RG250/1000, marked 'TEST SAMPLE', glass loose, electrodes damaged by use, (RMW/A212 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1937.