McVitie Weston valve collection, Cossor valve, type 230 X.P.
- maker:
- A C Cossor Limited
Cossor valve, type 230 X.P., green printed label, horizontal electrode assembly, glass envelope loose, (RMW/D20 - McVitie Weston number), by A C Cossor Limited.
Cossor valve, type 230 X.P., green printed label, horizontal electrode assembly, glass envelope loose, (RMW/D20 - McVitie Weston number), by A C Cossor Limited.