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100 Dollars - Elizabeth II 3rd Portrait - Grey Kangaroo - Gold Proof
| Issuer | Perth Mint |
|---|---|
| Year | 1990-1991 |
| Type | Non-circulating coin |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Latin |
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| Reverse description | Log in to see details |
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| Reverse lettering | THE AUSTRALIAN NUGGET 1 OZ. 9999 GOLD GREY KANGAROO · 1991 · |
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| Additional information |
The Grey Kangaroo gold proof was part of Perth Mint's push in the late 1980s and early 1990s to establish Australia as a serious competitor in the international bullion and numismatic gold market, directly challenging the South African Krugerrand and the Canadian Maple Leaf. The .9999 fineness — four nines — was a deliberate marketing and metallurgical choice, exceeding the Maple Leaf's then-standard .9999 purity claim and positioning Australian product as the benchmark for fine gold coinage.
KM#144 spans two calendar years, with dies and packaging differentiated by date. The 1991-dated pieces saw lower collector uptake as the series was already maturing.