5 Dolar Brunei / Brunei Dollars

Brunei's 2024 polymer 5 Dollar is part of the ongoing commemorative and circulation series issued under the Currency Interchangeability Agreement with Singapore — a bilateral arrangement dating to 1967 that keeps the Brunei Dollar and Singapore Dollar at par and mutually accepted at face value in both countries. That agreement has outlasted the political circumstances that created it by decades, and remains one of the few functioning currency unions between independent states in Southeast Asia.

P#42 on polymer marks a relatively recent substrate shift for the series. Earlier issues in this denomination ran on paper stock prone to humidity damage in Brunei's climate.