
McVitie Weston valve collection, GEC Osram valve, type D
- Made:
- 1919
- maker:
- GEC (Osram)

GEC Osram valve, type D, marked 61 RAF, pinch marked D438, (RMW/B23 - McVitie Weston number), by G.E.C. (Osram), 1919.
GEC Osram valve, type D, marked 61 RAF, pinch marked D438, (RMW/B23 - McVitie Weston number), by G.E.C. (Osram), 1919.