Katanga was a part of Congo until 1960 when it became an independent republic state. The Katanga state was short lived and was reunited with Congo in 1963. Some examples of Katanga stamps is as follows:
KATANGA
(Overprinted on Belgian Congo stamps.)
11 / JUILLET / DE / L'ETAT DU KATANGA
(Overprinted on stamps of Congo Democratic Republic.)
