McVitie Weston valve collection, Osram valve, type MHD4

Made:
circa 1933
maker:
Osram
Osram valve, type MHD4, pinch marked 0

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Osram valve, type MHD4, pinch marked 0
Science Museum Group
© The Board of Trustees of the Science Museum

Osram valve, type MHD4, pinch marked 0, (RMW/Y62 - McVitie Weston number), by Osram, c. 1933.

Details

Category:
Electronic Components
Object Number:
1972-141/1570
type:
valve
credit:
STC plc