Cyrenaica enjoyed a brief period of internal autonomy in 1949-51 when the British authorities recognised Amir Mohammed Idris Al-Senussi as Emir of Cyrenaica, which ended on 24 December 1951 when Cyrenaica, Tripolitania and Fezzan were unified as the Kingdom of Libya. Definitive and postage due stamps were issued in 1950. After unification, stamps of Libya were used.Stanley Gibbons Stamp Catalogue: Commonwealth and British Empire Stamps 1840-1970. 110th edition. London: Stanley Gibbons, 2008, p.123.
