Christmas Island was part of the Straits Settlements and Malaya until Australia gained possession on October 1, 1958.
Straits Settlements Dollars (STSD) were used on Christmas Island until April 1946 and Malaya Dollars (MYAD) were used from April 1946 until October 1958. Australian Pounds (AUP) were used from 1958 until the Australian Dollar (AUD) was introduced on February 14, 1966.