Mauritania. Central Bank of Mauritania. 2017 Issues. New ouguiya monetary standard set at a rate of 1 per 10 ouguiyas. Date: 28-11-2017. Dimensions: 145 x 65 mm. Watermark: shadow image (none). Material: polymer (Guardian). Crescent moon and star. No security thread. New safety sign with the WINVU function: transparent window with a shadow image. Open Quran book. Printer: Canadian Bank Note Company, Canada. Multicolored front and back printing, predominantly blue. Description of the front: frame and background made up of arabesques. View of the minaret of the Tichitt Mosque. Prefix and horizontal and vertical numbering in black. Texts in Arabic. "٥٠٠" value in the corners. A single combination of signatures with the Treasurer General and the Governor: Mohamad Ould Sidna and Abdel Aziz Ould Dahi. Description of the back: bottom composed of fish. Ore carrier and fishing boats. Texts in French. Value "500" in the corners.