As the North American Mustang was developed as a direct result of a British Air Ministry requirement, it is somehow fitting that the RAF and Commonwealth air forces used the aircraft extensively during WWII. The British designation for the later P-51D version was Mustang IV, with the Dallas built P-51K, which used a different Aeroproducts propeller, referred to as the Mustang IVa.

Scheme 1: KM272 Dooleybird 19 Squadron RAF 1945.
Scheme 2: KH676/CV-A Flg Off A F Lane, 3 Squadron RAAF Cervia Italy, April 1945.

FIGHTER - NORTH AMERICAN MUSTANG MK.IV / P-51K MUSTANG 1/48 - AIRFIX is categorised DIE-CAST AND SCALE MODELS / MODEL KITS / AIRPLANES and sold by l'Imaginaire, a store and specialised website.