25 Francs Duala

The Banque de l'Afrique Occidentale, despite its name, held the note-issuing concession for French Equatorial Africa as well as French West Africa — a jurisdictional oddity that persisted for decades. This 25 Francs note was payable at Duala, the principal port of Cameroun, which France had administered under a League of Nations mandate only since 1916, following the Anglo-French partition of the former German colony of Kamerun.

Bellery-Desfontaines was primarily known as a poster and decorative artist; his involvement in banknote design was relatively unusual for his career. The Florian brothers — Frédéric and Ernest-Théophile — handled engraving for the Banque de France across multiple colonial series during this period, and their work on this plate is consistent with that output.

The Duala payability designation makes this a geographically specific variant within what was otherwise a shared colonial plate design.