16/03/2021: New 5 Rial Polymer Banknote Introduced
A new polymer banknote with a denomination of 5 rials was introduced, enhancing durability and security features of the currency.
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.
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.
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.
15/01/2003: New Omani Rial Banknotes Issued
New series of Omani rial banknotes were introduced, featuring enhanced security features and updated designs.
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.
12/06/1994: Smaller Denomination Coins Issued
Small denomination coins, including 5, 10, 25, and 50 baisa coins, were issued in order to facilitate everyday transactions.
17/03/1986: 200 Baisa Coin Introduced
A new 200 baisa coin was introduced, becoming the highest denomination coin in circulation at that time.
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.
11/11/1975: 1/8 Rial Copper-Nickel Coin Introduced
A new 1/8 rial coin made of copper-nickel was introduced, representing a fractional value of the rial currency.
02/03/1973: Rial Oman Pegged to US Dollar
The Omani rial was officially pegged to the United States dollar, with an exchange rate of 1 OMR = 2.895 USD.
27/07/1970: Rial Oman is Introduced
The Omani rial was introduced, replacing the Gulf rupee at a rate of 1 rial = 2.6008 rupees.