CHAMPION
... CHAMPiOM SPARKING PLUGS *The SILLMENT Seal, exclusive to Champion, prevents gas-leakage. SPARKING PLUG CO. LTD., FACTORY. FELTHAM. MIDDLESEX By ensuring utmost engine-efficiency and economy through their unique gas-tight construction, Champion Sparking Plugs are making their contribution to all branches of motorised Government and Civilian service where dependable ignition is paramount. ...