Currency of Uruguay Currency of Uruguay This is an outline of Uruguay's monetary history. For the present currency of Uruguay, see Uruguayan peso. Uruguay's currency was initially that common to all of Spanish America. During the struggle over this region, initially between Spain and Portugal, then between Argentina and Brazil, the coinage of both contestants circulated. When the area was annexed to Brazil in 1821 as Provincia Cisplatina, the Portuguese (Brazilian) administration put notes of Banco do Brazil into circulation. This was the first paper money to circulate in Uruguay. Then, in 1826–1828, Argentine troops fighting against Brazil were paid in one-peso notes
Currency pair Currency pair A currency pair is the quotation of the relative value of a currency unit against the unit of another currency in the foreign exchange market. The currency that is used as the reference is called the counter currency, quote currency or currency and the currency that is quoted in relation is called the base currency or transaction currency. Currency pairs are generally written by concatenating the ISO currency codes (ISO 4217) of the base currency and the counter currency, and then separating the two codes with a slash. Alternatively the slash may be omitted, or replaced by either