Perhaps the rarest production TR4 model is the Dove GTR4 (and GTR4A) – a TR4 rebuilt as a coupé by a specialist coachbuilder for L F Dove Ltd, Triumph agents in Wimbledon.

Only 55 GTR4s are believed to have been built were produced with the conversions carried out by Harrington Motor Bodyworks, best known for the construction of the Harrington Alpine, a similarly modified Sunbeam Alpine.

Although most were based on the TR4 model, the sales brochure pictures a TR4A version of these cars but it’s believed that only 6 TR4As were converted.

The engines were fitted with such period extras as a heater in the water jackets to assist early morning starts and gas-flowed and fully balanced engines (by Jack Brabham Motors or Laystall Engineering in London) were offered as an option in the sales catalogue.

Two jump seats were placed behind the driver's seat using identical materials to the originally equipped standard TR4.

A wood-rimmed wheel with riveted perimeter was fitted to some models ...