Federation of South Arabia

The Federation of South Arabia was made up of the former Aden colony and the western states of the former Aden Protectorate, eventually 16 states/sultanates in all. The eastern states then formed South Arabia, still a British protectorate. It was formed in April 1962.  File:FED S Arabia 15f A.webp|1965 15 fils definitive File:Fed S Arabia 1dinar.jpg|1965 1 dinar value File:Fed S Arabia ICY.jpg|1965 65c International Cooperation Year File:Fed S Arabia Chruchill.jpg|1966 125f Chruchull 
 * Remaining a British protectorate too, the Federation's first issue was the British Red Cross omnibus issue of 1963.
 * In 1965, its first definitive series was issued, with its arms on the lower values, its flag on the higher values.
 * The run of British omnibus issues followed up to the 1966 UNESCO set.
 * In November 1967, the Federation of South Arabia and the South Arabian protectorated united to form the People's Republic of Southern Yemen.