Brunei is a country located on the north coast of the island of Borneo, in Southeast Asia. Apart from its coastline with the South China Sea it is completely surrounded by the state of Sarawak, Malaysia. Singaporeans who have enlisted into army for National Service would definitely have heard of this country.
One thing interesting is that the Brunei dollar is managed together with the Singapore dollar at a 1:1 ratio. Therefore, in Singapore, sometimes we may find Brunei Banknotes being circulated around. For a holiday in Brunei, there is also no need to exchange our Singapore notes for Brunei notes. This is similar to the Bahamas' unit of currency is the Bahamian dollar ($B) which is based on the U.S. dollar.
$25 - purple and beige (1992)
This was issued during the silver jubilee (25th anniversary) of HM Sultan Hassanal Bolkiah acceding to the throne. The design is of the 1989 series of currency.