4th portrait of Queen Elizabeth II facing right wearing the Girls of Great Britain and Ireland Tiara
Obverse script
Latin
Obverse lettering
ELIZABETH II
AUSTRALIA 2001
IRB
Reverse description
The arms of South Australia (a grassy mount with vines, wheat and barley stalks, citrus fruits, two cogs & miners pick, and a blue shield with an Australian Piping Shrike inside a gold circle, with a crest of four Sturt`s Desert Peas) diving the dates and representing one of nine states and territories that make up Australia.
Reverse script
Latin
Reverse lettering
CENTENARY OF FEDERATION
1901 2001
SOUTH AUSTRALIA
FIFTY CENTS