01/01/2022: Removal of monarchy symbol
Brunei currency no longer featured the portrait of the Sultan as part of efforts to modernize the banknotes.
21/07/2017: Commencement of New Series Polymer Banknotes
New series of polymer banknotes with modern designs entered circulation.
30/06/2015: Demonetization of old Guinean franc banknotes
The old series of Guinean franc banknotes, denominated in 'Syli,' ceased to be legal tender, and only the new franc banknotes remained in circulation.
05/05/2013: Upgrade of polymer banknotes
Introduction of new polymer banknotes with enhanced security features.
26/09/2012: Introduction of new Guinean franc coins
New coins denominated in the Guinean franc were introduced, replacing the previously used Guinean syli coins.
01/07/2011: Introduction of Brunei-Indonesia Currency Agreement
Brunei dollar became interchangeable with Indonesian rupiah in specified regions.
30/06/2010: Revaluation of the Guinean franc
The Guinean franc underwent a revaluation, with 1 new franc being equivalent to 10,000 old francs.
30/06/1997: Introduction of new Guinean franc
A new series of Guinean franc banknotes, denominated in 'Syli,' was introduced as a replacement for the previous currency.
18/03/1996: Change in currency regime
Brunei dollar became fully backed by foreign exchange reserves instead of gold.
30/11/1985: Devaluation of the Guinean franc
The Guinean franc was devalued by 50%, leading to an economic crisis and high inflation.
12/06/1973: Establishment of Brunei Currency Board
Currency Board assumed responsibility for the issuance and management of Brunei dollar.
31/05/1971: Redenomination of the Guinean franc
The Guinean franc underwent a redenomination, with 1 new franc being equivalent to 10 old francs.
27/07/1967: Introduction of Brunei and Singapore Currency Interchangeability Agreement
Brunei and Singapore dollars became interchangeable at par.
01/10/1959: Introduction of Guinean franc
The Guinean franc was introduced as the official currency of Guinea following its independence from France.