Civil mail from Sharjah went through the post office in Dubai until 1963. Military mail from the British Forces stationed in the area went through the RAF airport in Sharjah. On 10 July 1963, Sharjah opened its own post office and began to issue its stamps and postal stationery under the name of Sharjah & Dependencies (which included Kalba, Khor Fakkan, and Dibba). There were also unauthorized overprints using Hamriyah, a frequently secessionist coastal town subject to Sharjah but which never gained recognition as a Trucial State in its own right.