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100 Dollars - Elizabeth II 6th Portrait - Koala - Gold Bullion Coin
| Issuer | Perth Mint, Australia |
|---|---|
| Year | 2021 |
| Type | Non-circulating coin |
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|---|---|
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| Reverse description | A naturalistic depiction of an adult koala (Phascolarctos cinereus) perched among eucalyptus branches and foliage, rendered in high relief with detailed fur texture. The animal is shown in a resting posture, clinging to a forked tree branch with characteristic clawed paws, surrounded by stylised gum leaves and native vegetation. The Perth Mint's 'P' mint mark appears to the left of the design in the field. The arc legend 'AUSTRALIAN KOALA' is inscribed along the upper periphery, while the inscription '2021 1oz 9999 GOLD' appears along the lower portion of the field. |
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| Mintage | 2021 P - Proof |
| Additional information |
Australia's gold koala bullion series has run since 1986, distinguished from most sovereign bullion programs by its annually changing design — a deliberate policy by the Perth Mint to discourage melting and encourage collector retention alongside investor demand. The 2021 issue falls within the series' mature phase, by which point the Mint had refined its .9999 four-nines purity standard into a consistent production benchmark, marginally exceeding the .9990 fineness common among competing national programs.
KM#4214 was struck under the authority of the Perth Mint rather than the Royal Australian Mint, a distinction that matters: Perth operates as a commercial entity under Western Australian state ownership, independent of the federal government's own coining facility.