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The peso (established as the peso convertible) is the currency of Argentina, identified by the symbol $ preceding the amount in the same way as many countries using dollar currencies. It is subdivided into 100 centavos. Its ISO 4217 code is ARS.
Since the late 20th century, the Argentine peso has experienced a substantial rate of devaluation, reaching 25% year-on-year inflation rate in 2017. The official exchange rate for the United States dollar hovered around 3:1 from 2002 to 2008, climbing to 6:1 between 2009 and 2013. By August 2018, the rate had risen to 40:1.
Amounts in earlier pesos were sometimes preceded by a "$" sign and sometimes, particularly in formal use, by symbols identifying that it was a specific currency, for example $m/n100 or m$n100 for pesos moneda nacional. The peso introduced in 1992 is just called peso (until 2002 peso convertible), and is written preceded by a "$" sign only. Earlier pesos replaced currencies also called peso, and sometimes two varieties of peso coexisted, making it necessary to have a distinguishing term to use, at least in the transitional period; the 1992 peso replaced a currency with a different name, austral.
The peso was a name often used for the silver Spanish eight-real coin. Following independence, Argentina began issuing its own coins, denominated in reales, soles and escudos, including silver eight-real (or sol) coins still known as pesos. These coins, together with those from neighbouring countries, circulated until 1881.
In 1826, two paper money issues began, denominated in pesos. One, the peso fuerte ($F) (ISO 4217: ARF) was a convertible currency, with 17 pesos fuertes equal to one Spanish ounce (27.0643 g) of 0.916 fine gold. It was replaced by the peso moneda nacional at par in 1881.
The non-convertible peso moneda corriente (everyday currency) ($m/c) was also introduced in 1826. It started at par with the peso fuerte, but depreciated with time.
Although the Argentine Confederation issued 1-, 2- and 4-centavo coins in 1854, with 100 centavos equal to 1 peso = 8 reales, Argentina did not decimalize until 1881. The peso moneda nacional (m$n or $m/n) replaced the earlier currencies at the rate of 1 peso moneda nacional = 8 reales = 1 peso fuerte = 25 peso moneda corriente. Initially, one peso moneda nacional coin was made of silver and known as patacón. However, the 1890 economic crisis ensured that no further silver coins were issued. At the beginning of the 20th century, the Argentine peso was one of the most traded currencies in the world.