Australia 2010 20 cents KM-1513

a typical circulated specimen, from the Mountain Groan Collection

In 1966, Australia abandoned the sterling coinage she had used since the days of Captain Cook and adopted the decimal dollar and cent. This bust of the queen was introduced in 1999 and still appears on the twenty cent piece. This issue marks the centennial of the Australian Taxation Office, an event which surely puzzled many locals.

Recorded mintage: 11,575,000.

Specification: 11.31 g, copper-nickel, 28.65 mm diameter.

Catalog reference: KM 1513.

Source:

• Michael, Thomas, and Tracy L. Schmidt, Standard Catalog of World Coins, 2001-Date, 13th ed., Iola, WI: Krause Publications, 2018.
• McDonald, Greg, The Pocket Guide to Australian Coins and Banknotes, 23rd ed., Lavington, Australia, 2017.
• Pitt, Michael, Renniks Australian Coin and Banknote Values, 32nd Edition, Matraville, New South Wales, Australia: Renniks Publications, 2023.

Link to:

• 2005 20 cents, end of World War Two
• 2010 5 cents
• 2010 20 cents, platypus reverse
• 2010 dollar, centennial of Girl Guides
• 2010 100 dollars, 1 oz gold kangaroo
• 2010-P 100 dollars, Year of the Tiger, 1 oz gold
• 2013 20 cents, centennial of Canberra
• Coins and currency dated 2010
• return to coins of Australia