McVitie Weston valve collection, Ediswan gas-filled full-wave L.T. rectifier valve
Ediswan gas-filled full-wave L.T. rectifier valve, marked 68530, (RMW/A189 - McVitie Weston number), by Royal Ediswan.
Ediswan gas-filled full-wave L.T. rectifier valve, marked 68530, (RMW/A189 - McVitie Weston number), by Royal Ediswan.