McVitie Weston valve collection, STC valve, type 4260A
- Made:
- 1933
STC valve, type 4260A, marked AM 10E/224 85, pinch marked JQ2, (RMW/J148B - McVitie Weston number), by Standard Telephones and Cables Limited, 1933.
STC valve, type 4260A, marked AM 10E/224 85, pinch marked JQ2, (RMW/J148B - McVitie Weston number), by Standard Telephones and Cables Limited, 1933.