Spark plug, for the Harold Hume Piffard Aeroplane E.N.V. Aero-engine type D (40hp), V8 cylinder, 1910
Spark plug, unsigned, England, 1910, Harold Hume Piffard Aeroplane E.N.V. Aero-engine type D (40hp), V8 cylinder, 1910
Spark plug, unsigned, England, 1910, Harold Hume Piffard Aeroplane E.N.V. Aero-engine type D (40hp), V8 cylinder, 1910