20 Cents - Elizabeth II (4th Portrait - Astronomy)
Australia • 20 Cents • Copper-nickel • 2009
- Denomination
- 20 Cents
- Issuer
- Australia
- Struck
- 2009
- Composition
- Copper-nickel
- Currency
- Dollar
- Weight
- 11.31 g
- Diameter
- 28.52 mm
- Catalog refs
- KM 1075
Where to find one
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Where it came from
The 2009 Australian 20-cent coin was minted as part of the International Year of Astronomy celebrations. This commemorative issue honored the 400th anniversary of Galileo Galilei’s first use of a telescope to study the night sky, a landmark event in human scientific understanding that shifted the world toward the Copernican model of the solar system.
Designed by Vladimir Gottwald, the reverse side of the coin features a stylized depiction of the Southern Cross constellation alongside a telescope and an image of the planet Saturn. The design was produced by the Royal Australian Mint to commemorate Australia's significant contributions to modern astronomical research, and the series was widely distributed into general circulation as a accessible piece of scientific history for the public.
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About 20 Cents - Elizabeth II (4th Portrait - Astronomy)
20 Cents - Elizabeth II (4th Portrait - Astronomy) is a coin in the Coins catalog on collecto.rs. Australia • 20 Cents • Copper-nickel • 2009. Catalog data is sourced from Numista. No collectors on collecto.rs publicly track this coin yet — adding yours would make you the first.
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