Algeria. French administration. Bank of Algeria. Issue period: 1918 to 1938. Work by Georges Duval and engraving by Romagnol. Dimensions: 170 x 110 mm. Watermark: profile of a Moorish woman in a large medallion on the left. In a small medallion on the right: Arabic inscription in a crescent. Front and back: polychrome print, predominantly green, orange and blue. Description of the front: in the foreground on the right, the smallest watermark in an octagonal medallion placed on an agave and a doum palm. Behind, the great mosque of Algiers and its minaret dominate a distant view of the white city and its bay in the center. The wording of the issuing institute "BANQUE DE L'ALGÉRIE", the value "FIFTY FRANCS" and the date of issue are printed in dark green in the center at the top. The signatures, numbering and date of issue are printed in black. On the left, the largest watermark in a medallion decorated with arabesques is placed on a prickly pear. Three variants of signatures are known with The Chief Cashier and The Secretary General. Back description: large blue and orange frame decorated with arabesques. On the left, a child, naked and from the back, picks oranges while looking at an elegant young Algerian woman spinning spindle wool. In the upper right edge, the value "50" is printed in orange. In the center at the bottom, a large basket overflows with harvested fruit. In the bottom right, article 139 of the Penal Code is printed in orange in a yellow cartridge. The specimen is known as overprinted "SPECIMEN" in red on the watermarks in vertical on the left on the front. The note is watermarked, signed Moyse / Penalva, dated "41-0-2198" and numbered "0.000 - 000". A second specimen is known identical to the first but not numbered. A third specimen is known identical to the first but with an additional diagonal red overprint and dated "41-0-8192".