Historic Iranian Rial São Tomé and Príncipe dobra

23/02/2020: COVID-19 Pandemic's Impact on the Iranian Rial

The COVID-19 pandemic, along with economic challenges, caused further depreciation of the Iranian Rial (IRR) against major currencies.

01/01/2020: New Currency Symbol

A new currency symbol for the dobra, resembling the letters 'STD' with horizontal lines through them, was introduced for official use.

24/05/2018: Dobra Pegged to Euro

The dobra's exchange rate was pegged to the euro, aiming to stabilize the currency and boost economic cooperation with the European Union.

10/04/2018: Revaluation of the Iranian Rial

Iran's government announced a new currency exchange rate, devaluing the Iranian Rial (IRR) against foreign currencies.

01/01/2016: Introduction of Polymer Banknotes

São Tomé and Príncipe started issuing polymer banknotes as a means to enhance durability and reduce counterfeiting of the dobra.

24/09/2012: Imposition of International Sanctions on Iran

International sanctions were imposed on Iran, leading to a significant decline in the value of the Iranian Rial (IRR).

01/01/2010: Currency Redenomination

The third dobra was introduced, with 1 new dobra equalling 1,000 old dobras, aiming to simplify transactions and boost confidence in the currency.

01/01/1997: Introduction of the New Dobra

A new currency, the 'second dobra,' was introduced at a rate of 1,000 to 1 to combat hyperinflation and stabilize the economy.

24/05/1989: Introduction of the Two-Tier Exchange Rate System

Iran implemented a two-tier exchange rate system, with different rates for essential goods and non-essential imports.

24/12/1979: First Currency Devaluation

The first devaluation of the dobra occurred, reducing its value by 53% as a result of economic instability and inflation.

30/06/1977: Introduction of the Dobra

The São Tomé and Príncipe dobra was introduced as the official currency of the country after gaining independence from Portugal.

26/10/1975: Floating of the Iranian Rial

The Iranian Rial (IRR) was allowed to float against foreign currencies, marking the end of the fixed exchange rate system.

01/09/1957: Decimalization of the Iranian Rial

The Iranian Rial (IRR) was decimalized, dividing one Toman into 10 Rials to simplify the currency system.

01/04/1932: Introduction of the Iranian Rial

The Iranian Rial (IRR) was introduced as the official currency of Iran after replacing the Qiran.