Singapore dollar
Despite the emergence of new currencies in Malaysia, Singapore and Brunei, the Interchangeability Agreement which the three countries adhered to as original members of the currency union meant the Malaysian dollar was exchangeable at par with the Singapore dollar and Brunei dollar. This ended on 8 May 1973, when the Malaysian government withdrew from the agreement. The Monetary Authority of Singapore and the Brunei Currency and Monetary Board still maintain the interchangeability of their two currencies, as of 2017.