Analysis of information sources in references of the Wikipedia article "Brunei Darussalam Central Bank" in English language version.
Official Currencies of The Straits Settlements (1826-1939); Currencies of the Board of Commissioners of Currency, Malaya (1939-1951); Currencies of the Board of Commissioners of Currency, Malaya and British Borneo (1952-1957); Currencies of the Independent Malaya (1957 -1963); On 12 June 1967, the currency union which had been operating for 29 years came to an end, and the three participating countries, Malaysia, Singapore and Brunei, each issued its own currency. The currencies of the three countries were interchangeable at par value under the Interchangeability Agreement until 8 May 1973 when the Malaysian government decided to terminate it. Brunei and Singapore however continue with the Agreement until the present day.
{{cite web}}: CS1 maint: multiple names: authors list (link)Official Currencies of The Straits Settlements (1826-1939); Currencies of the Board of Commissioners of Currency, Malaya (1939-1951); Currencies of the Board of Commissioners of Currency, Malaya and British Borneo (1952-1957); Currencies of the Independent Malaya (1957 -1963); On 12 June 1967, the currency union which had been operating for 29 years came to an end, and the three participating countries, Malaysia, Singapore and Brunei, each issued its own currency. The currencies of the three countries were interchangeable at par value under the Interchangeability Agreement until 8 May 1973 when the Malaysian government decided to terminate it. Brunei and Singapore however continue with the Agreement until the present day.