McVitie Weston valve collection, Tungsram valve, type SP4B

Made:
circa 1936
Tungsram valve, type SP4B, marked X9 447 and 8899

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Tungsram valve, type SP4B, marked X9 447 and 8899
Science Museum Group
© The Board of Trustees of the Science Museum

Tungsram valve, type SP4B, marked X9 447 and 8899, (RMW/Y226 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., c. 1936.

Details

Category:
Electronic Components
Object Number:
1972-141/1745
type:
valve
credit:
STC plc