The Australian Dollar had not yet been floated in 1981 and was tied to the US Dollar. In 1981 One Australian Dollar was equal to One US Dollar.
One Dollar AUD in 1981 had the purchasing power of about $2.85 AUD today.
One Dollar AUD in 1981 had the purchasing power of about $2.64 USD today.
NOTE - This historical conversion is the result of many calculations and considerations by a purpose designed program for which I can take no credit. The resulting answer should only be regarded as an approximation.
The first Australian Dollar coin was issued in 1984.
There were no 1968 Australian Five Dollar notes printed.
There were no Australian Fifty Dollar notes printed in 1984.
Twenty Australian dollars
The Australian Dollar was going for about $0.73 USD in late 1994. The Australian Dollar is currently going for about $0.93 USD as of 3-Dec-2009.
The first Australian Two Dollar coin was issued in 1988.
Such a coin would have been issued as part of a mint or proof set. Any value would depend on the metal it was struck from and the design of the coin.
There were no 2003 Australian Ten Dollar star notes issued.
The conversion rate between the Australian dollar and the Indian rupee is one Australian dollar to 56.42 rupees. One rupee equals 0.02 Australian dollars.
Such a coin does not exist. The Australian Two Dollar coin was first issued in 1988.
The first Australian Two Hundred Dollar coins were issued in 1980.
Such a coin does not exist. The Australian One Dollar coin was first issued in 1984.