The obverse
Ian Rank-Broadley effigy of Queen Elizabeth II
The obverse carries the Ian Rank-Broadley effigy of Queen Elizabeth II, together with Australia, the 2018 date and the AUD $1 denomination.
The 2018 issue
2018 in the annual Koala sequence
This dated Brilliant Uncirculated issue is the 12th coin in the 2007–2026 standard one-ounce sequence.
Its reverse depicts koala seated on a eucalyptus branch among gum leaves. The reverse designer is not conclusively attributed in the sources listed below.
The published final mintage is 166,434, compared with an original maximum of 300,000.
- Series position
- Annual issue 12 of 20
- Obverse portrait
- Ian Rank-Broadley effigy of Queen Elizabeth II
- Mintage record
- 166,434 declared
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Design story
The 2018 reverse: Koala seated on a eucalyptus branch among gum leaves
The annual reverse presents koala seated on a eucalyptus branch among gum leaves. The reverse designer is not conclusively attributed in the sources listed below.
The reverse
Koala seated on a eucalyptus branch among gum leaves
The reverse depicts koala seated on a eucalyptus branch among gum leaves. First standard 1 oz Koala struck in .9999 fine silver.
Full specifications
At a glance
Available dimensions, artists and issue details for this annual coin are listed below.
- Denomination
- AUD $1
- Silver content
- 1 troy ounce
- Fineness
- .9999
- Metal
- Silver
- Diameter
- 40.6 mm
- Thickness
- 2.98 mm
- Finish
- Brilliant Uncirculated (BU)
- Authentication
- Not documented in the listed item-level sources
- Legal-tender country
- Australia
- Mint
- The Perth Mint
- Obverse portrait
- Ian Rank-Broadley effigy of Queen Elizabeth II
- Obverse artist
- Ian Rank-Broadley
Mintage & issue
166,434
DeclaredThe declared total is a published final number and is shown separately from the production ceiling.
- Maximum mintage
- 300,000
- Declared mintage
- 166,434
- Issue status
- Declared
- Source date
- 2026-08-13
This year in the series
See the design in sequence
Compare this coin with the annual designs immediately around it.
Sources
References for this annual coin
The references below cover the coin's specifications, design, mintage and annual context.
This catalog excludes proof, high-relief, gilded, colorized, privy-mark, graded, fractional, 2 oz, 5 oz, 10 oz and kilogram products unless mentioned only as related variants.
- The Australian Koala Silver Bullion Coin Series 2007–2022The Perth Mint · 2026-08-13
- 2018 Australia 1 oz Silver Koala BUAPMEX · 2026-08-13
Image credit
Obverse and reverse images: APMEX · 2018 standard 1 oz BU coin.