Argentina was part of the much bigger Viceroyalty of the Rio Plata, that also contained (parts of) Bolivia, Paraguay and Uruguay. Independence was proclaimed in 1810 as the United Provinces of Rio Plata (or River Plate). For decades, confederalists and unionists fought each other over disagreements on centralisation. In the 1831 the country was renamed to the Argentine Confederation and from 1853 it is known as the Republic of Argentina. Even after that not all regions wished to be part of Argentina and struggled for autonomy. This is why many provinces issued their own coinage next to the coinage issued by Argentina proper.
Argentina received a lot of immigrants from Europe in the late 19th century, most notably from Italy. The economy prospered and by 1900 it was one of the richest countries in the world. After 1930 things got worse and the country slid into political instability and economic decline. It was either ruled by dictators or leftists that pursued social reform but with gross overexpenditure, causing an era of chronic inflation up to hyperinflation. Democracy was restored a year after the lost Falklands War in 1983, but economic policy still resembles a bit to what happened before. In 2003 Argentina defaulted on its debt and turned USD saving deposits of Argentinians into Peso (meaning a 70% decline in value) leading to public outrage and bank runs. Even currently this could happen again.
Upon independence from the Spanish, the United Provinces of the River Plate and the individual provinces introduced their own Real to succeed the colonial Real. From 1815 the Real was renamed into Sol, with 16 Soles equal to a gold Escudo. In 1826, the Peso was introduced equal to 8 Reales.
Two Peso systems were maintained: the convertible Peso Fuerte and the non-convertible paper Peso Moneda Corriente which was devalued in steps. By 1881, the Peso m/c had lost 96% of its value compared to the Peso Fuerte and a new Peso Moneda Nacional was introduced at par with the Peso Fuerte = 25 Peso m/c. This new Peso was equal to 5 French Francs, but in 1883 already devalued to 2.2 Francs. In 1927 the peg was changed to 2.37 Pesos per USD, and by 1933 to 3 Pesos/$. Between 1934 and 1939, the Peso was pegged to sterling at a rate of 15 Pesos = 1 £. After WW2, inflation became chronic and by 1970 there were 350 Pesos in a US Dollar, when the Peso Ley replaced the Pesos m/n at a rate of 100 to 1.
Inflation did not stop. Until 1974 devaluations were mild (5 Pesos/$), but after that became rampant until there were 48,000 Pesos in a US Dollar in June 1983, when a new Peso Argentino was introduced at a rate of 10,000 to 1. Already 2 years later in 1985, the Peso Argentino had suffered from so much inflation that it was replaced by the Austral for a 1000 to 1.
The Austral was another short-lived currency. Starting from A0.80 = $1, it went to 12/$ in 1987, 1000/$ in 1989 and 10,000/$ in 1991. The Peso Convertible replaced the Austral at a rate of 10,000 to one and remained stable at dollar parity until the Argentine financial crisis and default in 2001, after which the rate stabilised at 3/$. The latest devaluation was in 2014, when it dropped by 15%. That together with a crawling peg has led to the current rate of 12 Pesos/$.
The many monetary crises make Argentina an interesting country for coin collectors, especially for the ones with budget constraints. Coins from 1896 until now are fairly easy to find and the many types reflect all those fruitless attempts to stem inflation. Coins from the short-lived Peso Argentino are a bit harder to find. That said, I've never seen any Argentinian coin from before 1880.
Argentine provinces:
https://en.numista.com/catalogue/argentine-provinces-1.html
Argentina:
https://en.numista.com/catalogue/argentine-1.html






































