Australia's banknotes were a world first in currency manufacturing: this was the first full series printed on polymer — that is, on plastic. The Reserve Bank of Australia first issued this denomination on 7 July 1992.

The face shows a portrait of Queen Elizabeth II together with a sprig of eucalyptus. The back shows the Old and New Parliament Houses, opened in 1927 and 1988 respectively.

The most interesting security features are the dark printing is produced with a special raised ink that can be felt with your finger, the clear window should be part of the banknote and not an addition and diamond-shaped patterns printed inside a circle on each side of the banknote — held up to the light the patterns should line up perfectly to form a seven-pointed star.

The Australian run suits a collection because it shows a whole transition: paper, the world's first complete polymer issue, and the current series in which every denomination has its own bird and its own wattle. UNC condition means the note has never circulated: no folds, no wear, no soiling, even corners — just as it left the press.

If you are just starting a collection, the VPcoins catalogue makes it easy to find banknotes to build it around.