McVitie Weston valve collection

Mullard valve, type PM5B, marked A277

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Mullard valve, type PM5B, marked A277
Science Museum Group
© The Board of Trustees of the Science Museum

Mullard valve, type PM5B, marked A277, (RMW/D51 - McVitie Weston number), by Mullard Limited, 1927.

Details

Category:
Electronic Components
Object Number:
1972-141/637
type:
valve
credit:
STC plc