McVitie Weston valve collection, Osram valve, type NR61

Made:
1937
maker:
Osram
Osram valve, type NR61, marked 406C

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Osram valve, type NR61, marked 406C
Science Museum Group
© The Board of Trustees of the Science Museum

Osram valve, type NR61, marked 406C, (RMW/Y639B - McVitie Weston number), by Osram, 1937.

Details

Category:
Electronic Components
Object Number:
1972-141/2334
type:
valve
credit:
STC plc