01/01/2020: Transition to Polymer Banknotes
Polymer banknotes were introduced in Guyana, enhancing the durability and security features of the Guyanese dollar.
20/12/2019: Macao–Hong Kong Financial Cooperation Agreement signed
The Macau and Hong Kong authorities signed a financial cooperation agreement to strengthen monetary and financial stability, impacting the value and role of the Macanese pataca.
03/02/2003: Redenomination of the Currency
The Guyanese dollar underwent a redenomination, with old banknotes replaced by new notes at a rate of 1,000 old dollars to 1 new dollar.
08/05/1995: Currency board system implemented
Macau adopted a currency board system, establishing a fixed exchange rate between the Macanese pataca and the Hong Kong dollar.
05/10/1992: Resumption of Banking System
The resumption of the banking system in Guyana significantly improved the stability and accessibility of the Guyanese dollar.
20/10/1977: Internationalization of the pataca
Macau allowed the international use and exchange of the Macanese pataca, strengthening its role as a stable and convertible currency.
08/06/1967: Link with Portuguese escudo reestablished
The Macanese pataca was once again pegged to the Portuguese escudo, ending the gold standard era.
26/05/1966: Independence of Guyana
Following Guyana's independence from Britain, the currency was renamed from British Guiana dollar to Guyanese dollar.
12/09/1951: Currency Board Established
A Currency Board was established to manage the British Guiana dollar, ensuring its stability and convertibility.
18/06/1948: Gold standard introduced
The Macanese pataca switched to the gold standard, with its value pegged to gold coins. The gold standard lasted until 1967.
06/08/1917: Currency Act of 1917
The British Guiana dollar was revalued at a rate of 4.80 dollars to 1 U.S. dollar, following the Currency Act of 1917.
17/03/1906: Silver standard established
Macau adopted the silver standard for the pataca, linking its value to silver coins in circulation. This standard remained in place until 1948.
27/10/1901: Introduction of Macanese pataca
The Macanese pataca was first introduced as the official currency of Macau, replacing the Portuguese real. It was initially pegged to the Portuguese escudo.
18/01/1839: Introduction of the British Guiana dollar
British Guiana dollar introduced as the official currency of British Guiana, replacing the Spanish and Portuguese coins previously in circulation.