4500 Francs CFA / 3 Africa

IDAC was not a central bank but a private promotional organization, and the "3 Africa" series it issued in the mid-2000s occupied a murky legal space — these pieces circulated in name across participating Central African states but were never formally integrated into the CFA franc monetary system administered by the Banque des États de l'Afrique Centrale. The X# prefix in standard references signals exactly that ambiguity: catalogued as an unofficial or semi-official issue rather than a state-authorized coin.