McVitie Weston valve collection, Mazda valve, type Pen 220
- Made:
- 1931
Mazda valve, type Pen 220, envelope marked TEST REJECT GTX, pinch marked AF/A/267, (RMW/Y267 - McVitie Weston number), by British Thomson-Houston Company Limited, 1931.
Mazda valve, type Pen 220, envelope marked TEST REJECT GTX, pinch marked AF/A/267, (RMW/Y267 - McVitie Weston number), by British Thomson-Houston Company Limited, 1931.