McVitie Weston valve collection, EMI valve, type CV109
- Made:
- circa 1943
EMI valve, type CV109, marked WA278, (RMW/Y703B - McVitie Weston number), by Unknown maker, c. 1943.
EMI valve, type CV109, marked WA278, (RMW/Y703B - McVitie Weston number), by Unknown maker, c. 1943.