McVitie Weston valve collection, Mazda valve, type AC/DD
Mazda valve, type AC/DD, pinch marked 94 and C5987P, (RMW/A19 - McVitie Weston number), by British Thomson-Houston Company Limited.
Mazda valve, type AC/DD, pinch marked 94 and C5987P, (RMW/A19 - McVitie Weston number), by British Thomson-Houston Company Limited.