McVitie Weston valve collection, STC valve, type 8A1 - Experimental
- Made:
- 1933
STC valve, type 8A1 - Experimental, full length anode, (RMW/Y116A - McVitie Weston number), by Standard Telephones and Cables Limited, 1933.
STC valve, type 8A1 - Experimental, full length anode, (RMW/Y116A - McVitie Weston number), by Standard Telephones and Cables Limited, 1933.