
McVitie Weston valve collection, Cossor valve, type S.G. Pentode
- maker:
- A C Cossor Limited

Cossor valve, type S.G. Pentode, metallized marked E (white on black printed label) and 4V3, band of metallizing removed, (RMW/G123 - McVitie Weston number), by A C Cossor Limited.