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According to an article on Agence Mauritanienne d’Information, on 1 February 2012, the Banque Centrale de Mauritanie introduced a new 2,000-ouguiya (US$6.80) note that is smaller than the preceding issue (B118), and includes several new anti-counterfeiting elements, including a ClearText windowed security thread with demetalized BCM 2000, holographic stripe, and green-to-blue OVI features, as well as a new blue color scheme.
Courtesy of Thomas Augustsson.