The Brunei-Singapore CIA

Last year, Brunei and Singapore marked its 40th Anniversary of Currency Interchangeability Agreement between Brunei and Singapore. When I was at MOF, we used to call the agreement the CIA. If you remember your history of currency notes, up to 1967, the three countries of Brunei, Malaysia and Singapore used the same currency notes issued by the Malaya and British Borneo Currency Board. Come 1967,