McVitie Weston valve collection, Ediswan valve, type E.S.75.H
Ediswan valve, type E.S.75.H, electrodes damaged, pinch marked H3, (RMW/C117C - McVitie Weston number), by Royal Ediswan.
Ediswan valve, type E.S.75.H, electrodes damaged, pinch marked H3, (RMW/C117C - McVitie Weston number), by Royal Ediswan.