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1 Dollar - Elizabeth II 4th Portrait - Great Barrier Reef
| Issuer | Perth Mint, Australia |
|---|---|
| Year | 2010 |
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| Composition | Log in to see details |
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| Technique | Milled, Colored |
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| Obverse description | Log in to see details |
|---|---|
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| Obverse lettering | ELIZABETH II AUSTRALIA 2010 IRB |
| Reverse description | A finely detailed relief effigy of a sea turtle in full swim occupies the central field, set against a vivid pad-printed polychrome background depicting an underwater marine scene of the Great Barrier Reef. The coloured field features deep blue ocean tones with light rays descending from above, coral formations in ochre and red tones at the base, and green reef structures to the lower right. The denomination $1 appears in large numerals above the turtle, with the legend AUSTRALIA arcing along the left field and GREAT BARRIER REEF along the upper right. The Perth Mint privy mark P appears at lower left within the coloured field. |
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| Additional information |
Australia's commemorative dollar program has produced hundreds of issues, but this piece is notable for its use of pad printing — a process borrowed from industrial product decoration that allows full-colour imagery to be applied to a coin surface without enamel inlay or cloisonné work. The Perth Mint adopted the technique in the late 2000s to broaden the visual range of lower-denomination collectibles without the cost of precious metal substrates.
The Great Barrier Reef designation places this within a broader environmental awareness series. Pad-printed colour on circulating alloy blanks is notoriously susceptible to wear; surviving examples with intact colour are considerably more desirable than the mintage figures alone would suggest.