McVitie Weston valve collection
- Made:
- 1931 in United States and Canada
- maker:
- Mullard Limited
Mullard detector or AF triode valve, type 904V, B5 base, short gauze anode, (RMW/F50A - McVitie Weston number), by Mullard Limited, 1931.
Mullard detector or AF triode valve, type 904V, B5 base, short gauze anode, (RMW/F50A - McVitie Weston number), by Mullard Limited, 1931.