McVitie Weston valve collection, Tungsram valve, type RG250/3000
- Made:
- 1939-circa 1950
Tungsram valve, type RG250/3000, black printed label marked 'Prufschein No. 1498, Rohre No. M1274', (RMW/A213 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1939-c. 1950.