Tamiya #60748 1/72 Supermarine Spitfire MkI . The Supermarine Spitfire is regarded by many as the most esthetically designed single seat fighter to appear during the Second World War. It was conceived by the brilliant British designer Reginald J. Mitchell, and first flew on 5 March 1936. It was an advanced, low wing single seat monoplane with a very smooth flush riveted metal skin and a long flowing front cowling.