
McVitie Weston valve collection, Marconi WT Co Round valve, type V24

Marconi WT Co. valve, type V24, one end of cap loose, (RMW/B77 - McVitie Weston number), by Marconi Wireless Telegraph Company Limited.
Marconi WT Co. valve, type V24, one end of cap loose, (RMW/B77 - McVitie Weston number), by Marconi Wireless Telegraph Company Limited.