Issuing Institute of French Equatorial Africa and Cameroon. Banknote issued in 1957 but undated. Work of Pierre Munier and engraving of Baudier for the front and Poilliot for the back. Dimensions: 140 x 90 mm. Printer: Bank of Algeria. Watermark: Bacongo girl's head. Front and back: multicolored printing. Front: The issuing institute "Issuing Institute of French Equatorial Africa and Cameroon", the value in figures and letters are printed in dark blue. Numbering and signatures are printed in black. On the left, a young woman in traditional dress poses in front of the huts of her village. Two types of signatures: The President, Georges Armand Gautier and The General Manager, Claude Panouillot. Back: A freight train passing over a bridge in a lush landscape. The value in figures is printed in blue on the sides of the note. At the bottom right, article 139 of the Penal Code is printed in a pink cartouche. Specimen of the issued note numbered O.00 - 00000 with "SPECIMEN" perforated obliquely on the right side of the bill and a specimen number affixed in black on two lines. Copies seen: 0006, 0015, 0044, 0069, 0199. Known uniface proofs of front and back, non-watermarked, printed on high-sided paper with perforations on the left and color marks on the right. Photographic prints of the front and back from the studio of Pierre Munier.