McVitie Weston valve collection
- Made:
- 1934
Brimar pentagrid valve, type 6.A.7., USS7 base, (RMW/Y114 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1934.
Brimar pentagrid valve, type 6.A.7., USS7 base, (RMW/Y114 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Ltd., 1934.