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1 Dollar - Elizabeth II 4th Portrait - Australian Butterfly - Richmond Birdwing
| Issuer | Perth Mint, Australia |
|---|---|
| Year | 2016 |
| Type | Log in to see details |
| Value | 1 Dollar |
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| Composition | Log in to see details |
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| Diameter | Log in to see details |
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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 | RICHMOND BIRDWING P |
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| Additional information |
The Richmond Birdwing (*Ornithoptera richmondia*) was by 2016 restricted to a corridor of subtropical rainforest in southeast Queensland barely 100 kilometers long — one of the most geographically confined butterfly ranges of any species on the continent. The Perth Mint's pad-printing process, applied here to aluminium bronze, was specifically adopted to render the iridescent wing coloration that conventional die striking cannot replicate in metal alone.