Australia 2011 20 cents KM-403

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. Several commemorative twenty cents exist for 2011.

Recorded mintage: 11,575,000 plus 2,072 in silver.

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

Catalog reference: KM 403.

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, platypus reverse
• 2011 5 cents
• 2011 50 cents
• 2011-P 8 dollars, koala, 5 oz silver
• Australia 2011-P 50 dollars KM-1557 Great White Shark, platinum
• 2011-P 100 dollars, 25th Anniversary of the Gold Coin Program
• 2011-P 100 dollars, platypus, 1 oz platinum
• 2011 3000 dollars, Year of the Rabbit
• 2013 20 cents, centennial of Canberra
• Coins and currency dated 2011
• return to coins of Australia