Country	Australia
Year	1980(1969-1984)
Value	50 Cents 0.5 AUD = 0.53 USD
Metal	Copper-nickel
Weight	15.55 g
Diameter	31.5 mm
Thickness	3 mm
Engravers	Arnold Machin (obverse) Stuart Devlin (reverse)
Shape	Dodecagonal (12-sided)
Demonetized
Obverse	Head of Queen Elizabeth II Lettering: ELIZABETH II AUSTRALIA 1979
Reverse	Australia coat of arms (the escutcheon is carried by a kangaroo and an ostrich) Lettering: 50 SD
Edge	Smooth
Mintage
1969	14,015,000
1969	13,000(Proof)
1971	21,056,000
1971	10,000(Proof)
1972	5,586,000
1972	10,000(Proof)
1973	10,000(Proof)
1973	4,009,000
1974	8,962,000
1974	11,000(Proof)
1975	19,025,000
1975	23,000(Proof)
1976	21,000(Proof)
1976	27,280,000
1978	25,765,000
1978	39,000(Proof)
1979	24,886,000
1979	36,000(Proof)
1979	On reverse, two parallel horizontal bars behind Emu's head
1980	68,000(Proof)
1980	On reverse, two parallel horizontal bars behind Emu's head
1980	38,681,000
1981	24,168,000
1981	86,000(Proof)
1983	80,000(Proof)
1983	48,923,000
1984	26,281,000
1984	61,000(Proof)

50 Cents, Australia, 1980

Australia(1969-1984), 1980, 50 cents, Copper-Nickel