Cossor valve, type 220.S.G., metallized bulb with red and white paper label, (RMW/G124 - McVitie Weston number), by A C Cossor Limited, 1930.
Cossor valve, type 220.S.G., metallized bulb with red and white paper label, (RMW/G124 - McVitie Weston number), by A C Cossor Limited, 1930.