1st January 1915
|Sc1-4, 6, 8, 9 SG1-6|
|Sc10, 12, 14-17, 19, 20 SG7-14||xxx|
perf 14x13½, no wmk
|Stamps of Middle Congo overprinted on one line 1915-22|
|1 centime olive grey and brown||1||1|
|other values 2c-20c||2-9||2-6, 19-20|
|Stamps of Middle Congo overprinted on two lines 1915-22|
|25c blue and green||10||7|
|other values 25c to 5 francs||11-22||8-16, 21-23|
† Scott  lists the entire U-S-C issue from one block covering 1915-22. Gibbons  splits the listing into 1915-18 and 1922, hence the disjuncture in numbering.
|1922 Sc23 SG24|
Ubangi-Shari was originally part of French Congo. French Congo was divided in 1904 into into Middle (Moyen) Congo, Gabon, Ubango-Shari and Chad, though Ubangi-Shari continued to use the stamps of Middle Congo until 1915. From 1915 to 22 it shared postal administration with Chad, and so the stamps of Middle Congo were overprinted "OUBANGUI-CHARI-TCHAD".
From 1922 to 1936 specific overprints were made for Ubango-Shari (and Chad) and from 1936 until 1960, the stamps of French Equatorial Africa were used.
Central African Republic
1st December 1959
perf 13, no wmk, engr
Printed ar the Govt. Printing Works, Paris.
|15 francs multi||1||1|
Scott  states, "The former French colony of Ubangi-Shari, a unit in French Equatorial Africa, proclaimed itself the Central African Republic Dec. 1, 1958. It became the Central African Empire Dec. 4, 1976. It became the Central African Republic again in 1979."