2 Ouguiya

Mauritania's 2018 coinage reform replaced the old aluminum-bronze pieces and introduced a revised series denominated in the ouguiya, itself a currency defined at five khoums — a subunit structure rooted in the traditional khoms fraction used in pre-colonial Saharan trade. The ouguiya was first introduced in 1973 when Mauritania left the West African CFA franc zone following independence consolidation, making it one of the later Francophone African nations to establish a wholly independent monetary system.