
McVitie Weston valve collection, Marconi WT Co Round valve, type Q

Marconi WT Co. valve, type Q, gauze grid, in Western Electric ‘Wecovalve Peanut’ box, (RMW/B97B - McVitie Weston number), by Marconi Wireless Telegraph Company Limited.
Marconi WT Co. valve, type Q, gauze grid, in Western Electric ‘Wecovalve Peanut’ box, (RMW/B97B - McVitie Weston number), by Marconi Wireless Telegraph Company Limited.