01/01/2022: Planned Introduction of New Banknotes
Mauritania plans to introduce a new series of banknotes with modern security features and improved durability to enhance the overall quality and functionality of the currency.
01/07/2020: Replacement of Commemorative Banknote
A new 20,000 MRO commemorative banknote was issued to mark the 60th anniversary of independence, replacing the older version. It showcases significant historical landmarks and figures.
01/10/2018: New Banknotes and Coins
Mauritania introduced a new series of banknotes and coins denominated in Ouguiya, featuring enhanced security features and updated designs to combat counterfeiting.
01/01/2018: Floating of the Ouguiya
The Mauritanian Ouguiya transitioned from a fixed exchange rate regime to a floating exchange rate system. The currency's value is now determined by market forces within a managed float.
15/10/2006: New series of banknotes
Costa Rica introduced a new series of banknotes featuring enhanced security features to combat counterfeiting and modernize the colón currency.
01/05/2004: Redenomination of the Ouguiya
The Mauritanian Ouguiya underwent a redenomination, where 1 new MRO was equivalent to 10 old MRO. This measure aimed to simplify transactions and improve economic stability.
21/05/1991: Free-floating exchange rate
Costa Rica transitioned to a floating exchange rate regime, allowing the colón's value to be determined by market forces.
01/06/1978: Decentralization of Currency Issuance
The Central Bank of Mauritania granted the Banque Centrale de Mauritanie (BCM) the authority to issue and control the Mauritanian Ouguiya, decentralizing currency issuance.
01/11/1973: Introduction of the Mauritanian Ouguiya
The Mauritanian Ouguiya (MRO) was introduced as the official currency of Mauritania, replacing the CFA franc. It was initially pegged to the French franc at a rate of 1 MRO = 5.5 FRF.
09/11/1961: Introduction of the Monetary Reform
Costa Rica implemented a monetary reform, replacing the old colón with a new one at a rate of 1 to 100, to combat inflation.
30/11/1949: Abolition of the army
After the abolition of the army, the Costa Rican government focused on economic development, leading to stable monetary policies for the colón.
14/12/1917: Establishment of the Central Bank of Costa Rica
The Central Bank of Costa Rica was established to oversee monetary policy, including the management of the colón.
09/04/1896: Adoption of the gold standard
Costa Rica adopted the gold standard, pegging the value of the colón to gold, leading to currency stability.
18/03/1850: Introduction of the Costa Rican colón
The Costa Rican colón was officially introduced as the currency of Costa Rica to replace the Spanish real.