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100 Dollars - Charles III 1st Portrait - The Australian Nugget - Welcome Stranger - Gold Proof

Issuer Perth Mint
Year 2026
Type Non-circulating coin
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Obverse description Uncrowned effigy of King Charles III facing left, rendered in high relief with finely detailed hair and draped collar, after the portrait by Dominic Tassell. The legend CHARLES III arcs along the upper left field and AUSTRALIA along the upper right, separated by raised dots, with the denomination 100 DOLLARS inscribed along the lower arc. The engraver's initials DT appear incuse beneath the portrait truncation.
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Edge Reeded
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Additional information

The Welcome Stranger, found near Moliagul in Victoria in February 1869 by John Deason and Richard Oates, remains the largest alluvial gold nugget ever recorded at 2,316 troy ounces. It was so large it had to be broken with a blacksmith's hammer before it could fit on the scales at the Bank of Victoria in Dunolui. Melted within days of discovery, no physical trace survives — making it permanently a subject of documentation rather than display.

This is also the first Perth Mint bullion issue to carry the effigy of Charles III, replacing the long-running Jody Clark portrait of Elizabeth II used on the series since 2015.

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