Obverse
2nd portrait of Queen Elizabeth II facing right.
Lettering: ELIZABETH II
AUSTRALIA 1981
Reverse
Platypus (Ornithorhynchus anatinus) and the numeral "20"
Lettering: 20
SD
Extended information
Year
Denomination
Currency
Metal
Copper-Nickel
Ruler
Weight
8.4 g.
Diameter
28
mm.
Alignment
Medal ↑↑
Shape
Irregular
Edge
Plain
