<Tr> <Th> Source </Th> <Td> The World Factbook, CIA (USA), 2014 est . </Td> </Tr> <P> The metical (plural: meticais) is the currency of Mozambique, abbreviated with the symbol MZN or MT . It is nominally divided into 100 centavos . The name metical comes from Arabic مثقال (mithqāl), a unit of weight and an alternative name for the gold dinar coin that was used throughout much of Africa until the 19th century . </P> <P> The metical (MZM) replaced the escudo at par on 16 June 1980 . It was divided into 100 centavos . The metical underwent severe inflation . After the revaluation of the Romanian leu, the metical briefly became the least valued currency unit, at a value of about 24,500 meticais per USD, until the Zimbabwean dollar took the title in late August 2005 . </P> <P> On July 1, 2006, Mozambique redenominated the metical at a rate of 1000: 1 . The new ISO 4217 code is MZN . New coins and banknotes were introduced on July 1, 2006, and the transitional period during which both old and new meticais could be used lasted until December 31, 2006 . During the conversion, the new currency was locally abbreviated as MTn, but has since largely returned to MT . </P>

When did the currencies of mozambique first come in circulation