1st European people to land the territories of the former French colony were Portuguese. They mainly established on the actual Gabonese coast and became mainly slave sellers. They were followed by Dutch by the same way.
French colonization in Equatorial Africa started in Gabon in 1839 after a treaty with a tribal sovereign, King Denis Rapontchombo. By this way, France became the 1st European colonizer to explore the local hinterland. In half a century, France colonized the whole Gabon, "Medium-Congo" - finally called French Congo after becoming a formal colony - the Ubangi-Shari territory (actually in Central African Republic) and finally conquerred the Kanem-Bornu Empire (actually in Chad). All these colonies/territories were considered as one main colony in 1911 as French Equatorial Africa.
Please note that the local Governor was the 1st to claim his alleagance with the Free France during WWII. As an answer for this fidelity, France opened a conference in Brazzaville to create the French Union, replacing the old colonial system.
After a referendum in September 1958 the French Eqatorial Africa splitted in 4 autonomous republics (Gabon, Congo, Central Africa and Chad) which reunified themselves as a Union of Central African Republics before their independance in 1960. Their currency union integrated Cameroon in 1960 and finally they created the Central African States Bank (BEAC: Banque des Etats d'Afrique Centrale), central bank of the currency union, in 1972. Equatorial Guinea joined the currency union in 1985.
The French colonies used the French franc, but after WWI local banknotes started to be printed. The colony had to wait for the WWII to have its own coinage. The 1st coins were minted in South Africa. Please note that the holed 10 centimes coin was not officially released and finally became very rare. After the war, a new coinage appeared, with a common design with Cameroon coinage: specific coinage of 1 franc and 2 francs with separate territorial inscription, and a fully-shared coinage for 5 francs, 10 francs and 25 francs coins.
The BEAC 1st series coinage (excluding Equatorial Guinea, which made its own 1st series coinage in Spanish after joining the currency union) appeared after its establishment in 1972, but initially kept the same design since the colonial coinage. Please note the 50 francs coinage appeared later with varieties showing for which country the coin was intended to go, and about 100 francs and 500 francs, there is a mix between BEAC common coinage and specific coinage from each country. In 2006 was introduced the new CEMAC series to withdraw old coinage (told to be highly counterfeited, particularly the 100 francs). Note there is no more specific coinage from Equatorial Guinea, except commemoratives, like other countries who still have the right to emit their own commemorative coinage.
French Equatorial Africa:
https://en.numista.com/catalogue/aef-1.html
FEA-Cameroon common coinage:
https://en.numista.com/catalogue/cameroun-2.html
Equatorial African States coinage:
https://en.numista.com/catalogue/afrique_equatoriale-1.html
Central Africa (BEAC) coinage:
https://en.numista.com/catalogue/beac-1.html















