12/15/2015. Remarks by Johan Visschedijk: "The sole Curtiss Model 79 Hawk IV was a refined Model 68 Hawk III with an completely enclosed cockpit. Power plant was a 745 hp Wright R-1820 Cyclone nine-cylinder, single-row, air-cooled radial engine and armament consisted of two machine guns. Registered NRI88M the aircraft was initially used as a demonstrator, subsequently it was sold to Argentina in July 1936."