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25 Dollars - Charles III 1st Portrait - Extragalactic - Silver Patinaed Coloured
| Issuer | Perth Mint, Australia |
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| Year | 2025 |
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| Engraver(s) | DT |
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| Obverse description | Uncrowned effigy of King Charles III facing left, rendered in high relief with fine detail to the hair and collar, against a patinaed field exhibiting iridescent blue and red toning. The legend CHARLES III AUSTRALIA arcs along the upper periphery, flanked by raised dots at the lower left and right. The lower arc carries the inscriptions 5 oz 9999 Ag and 25 DOLLARS, denoting the coin's bullion specification and denomination. The engraver's initials DT appear in small incuse lettering at the lower right of the portrait. The entire obverse surface displays a distinctive chemical patina treatment producing a vivid spectrum of colours across the field. |
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| Reverse script | Latin |
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| Additional information |
The Perth Mint's "Extragalactic" issues pull from actual astrophysical survey data — the structures depicted are drawn from deep-field observations compiled by programs like the Sloan Digital Sky Survey, which mapped over three million astronomical objects across roughly a third of the celestial sphere. The 155-gram planchet gives the colorization and patination layers enough surface area to render spatial depth that smaller formats simply can't carry.
Charles III's first portrait on Perth Mint issues follows the Jody Clark effigy, adopted across Commonwealth minting authorities after its introduction on UK coinage in 2015.