Designer: obverse: Arnold Machin; reverse: Stuart Devlin
Reference: KM# 64
Diameter: 19.4 mm
Reverse The central area features a relief image of a sitting echidna and a large numeral 5. Below is the inscription 'SD' — the engraver's mark of Stuart Devlin.
Obverse In the left part, following the curve of the coin's edge, is the English text 'ELIZABETH II'. On the right is the country name Australia and the year of issue 'AUSTRALIA 1982'. The central area features the right-facing profile of Queen Elizabeth II.