Was initially Mirage IIIR c/n 301 built in 1963 and used by French Air force until 1979. Then Dassault highly modified it to became Mirage III NG and Mirage 50 prototype in 1979 . Was equipped with Mirage F1C engine, radar system and refueling probe, and also with Mirage 2000 fly by wire controls. Was displayed in different air show until 1987. Is now preserved in Dassault Facilities in Seclin, France.