The obverse
Dan Thorne effigy of King Charles III
The obverse carries the Dan Thorne effigy of King Charles III, together with Australia, the 2025 date and the AUD $1 denomination.
The 2025 issue
2025 in the annual Koala sequence
This dated Brilliant Uncirculated issue is the 19th coin in the 2007–2026 standard one-ounce sequence.
Its reverse depicts koala lying along a tree branch among eucalyptus foliage. Aleysha Howarth is credited with the reverse design.
The published figure is a maximum of 300,000; no final declared total is shown.
- Series position
- Annual issue 19 of 20
- Obverse portrait
- Dan Thorne effigy of King Charles III
- Mintage record
- 300,000 maximum
01
02
03
Design story
The 2025 reverse: Koala lying along a tree branch among eucalyptus foliage
The annual reverse presents koala lying along a tree branch among eucalyptus foliage. Aleysha Howarth is credited with the reverse design. The issue also includes micro-laser engraved letter within the reverse design.
The reverse
Koala lying along a tree branch among eucalyptus foliage
The reverse depicts koala lying along a tree branch among eucalyptus foliage. The issue also includes micro-laser engraved letter within the reverse design.
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
- 40.9 mm
- Thickness
- 3.5 mm
- Finish
- Brilliant Uncirculated (BU)
- Authentication
- Not documented in the listed item-level sources
- Legal-tender country
- Australia
- Mint
- The Perth Mint
- Obverse portrait
- Dan Thorne effigy of King Charles III
- Obverse artist
- Dan Thorne
- Reverse designer
- Aleysha Howarth
Mintage & issue
300,000
MaximumThe published number is a maximum production limit. A final declared mintage is not currently listed.
- Maximum mintage
- 300,000
- Issue status
- Maximum
- 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.
- Australian Koala 2025 1oz Silver Bullion CoinThe Perth Mint · 2026-08-13
- 2025 Australia 1 oz Silver Koala BUAPMEX · 2026-08-13
Image credit
Obverse and reverse images: APMEX · 2025 standard 1 oz BU coin.