Issuing Institute of French Equatorial Africa and Cameroon. Banknote issued in 1957 but undated. Work of Pierre Munier and engraving of Marliat for the front and Beltrand for the back. Dimensions: 128 x 83 mm. Printer: Bank of Algeria. Watermark composed of a face of Sango girl (Oubangui). Front and back: multicolored printing. Front: The issuing institute "Issuing Institute of French Equatorial Africa and Cameroon", the numbering, the value in letters and the signatures are printed in black. The value in figures is printed in blue. In a medallion in the center, portrait of Félix Éboué, Governor General of Cameroon. On his left, a girl carrying a jar on her head. On the right, four men in a pirogue on a river and their village in the background. Two types of signatures: The President, Georges Armand Gautier and The Director General, Claude Panouillot. Back: On the right, portrait of a Bamikele from the village of Bafoussam (Source: Maurice Kolsky) and view of a wharf at the port of Douala and the Wouri River. The value in figures is printed in blue on the sides of the note. At the center below, article 139 of the Penal Code is printed in an orange cartridge. Specimen of issued note numbered O.00 - 00000 with "SPECIMEN" perforated vertically on the right side of the bill. Another identical specimen with a specimen number affixed in black on two lines. Copies seen: 0011, 0013, 0076. Photographic print of the front, type not final from the workshop of Pierre Munier.