McVitie Weston valve collection, Tungsram valve, type 0-200/2500
- Made:
- 1936
Tungsram valve, type 0-200/2500, marked: Spezial No. 251, Lab. Sample, large horned triode on special 4-pin base, (RMW/J134 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1936.