These salmon coloured original $5 polymer notes from Australia were a first in plastic money issues worldwide.
A unique and beautiful example is offered here for sale. Has lovely small run of solid “8’s” in the serial as well.
The first year of production is always a safe bet from an investment stand point and many collectors have quite a large piece of their portfolio built up around the 1992 and 1993 issues.
Here is a great place to start if your looking to enhance your private collection.