This style horn was used in most British cars of the 1960s, and 1970s including MGB, MG Midget and 1100, Triumph TR4, TR250, TR6, TR7, Spitfire, later Austin-Healey 3000, Jaguar E-type, late Mark 2 and X, Land Rovers, and practically every other 12 Volt British car of the period. They are good quality reproductions but are not marked "Lucas". They sound like the originals.