This is a survey of the postage stamps and postal history of Nigeria.
Postage stamps and postal history of Nigeria Wikipedia
The first stamps for the modern state of Nigeria were issued on 1 June 1914 following the amalgamation of all of the British colonies in the area (Northern Nigeria and Southern Nigeria). The first stamps were the standard King George V Empire keytype, which was also previously used for the issues of Northern Nigeria.
The first issue of independent Nigeria was issued on 1 October 1960, following with a definitive issued on 1 January 1961. In 1963 Nigeria became a Republic within the British Commonwealth and a new definitive set was issued on 1 November 1965.
Between 1960 and 1961 Nigerian definitives of 1953-57 were overprinted "CAMEROONS/U.K.T.T." for use in Southern Cameroons. This issue was also valid for use in Northern Cameroons until it joined Nigeria. In 1961, Southern Cameroons became part of Cameroon.
Between 30 May 1967 and 15 January 1970, the region of Biafra attempted to secede from Nigeria and issued their own postage stamps. Eventually, after a bloody civil war they rejoined Nigeria.