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10 Dollars - Elizabeth II 4th Portrait - Evolution of Numbers
| Issuer | Perth Mint |
|---|---|
| Year | 2004 |
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| Reference(s) | KM#739 |
| Obverse description | Fourth portrait effigy of Queen Elizabeth II facing right, as designed by Ian Rank-Broadley, depicting the sovereign wearing the Girls of Great Britain and Ireland Tiara. The legend encircles the portrait in the outer border, with the denomination and designer's initials IRB truncated below the effigy. The portrait is rendered in fine relief against a mirrored proof field. |
|---|---|
| Obverse script | Log in to see details |
| Obverse lettering | ELIZABETH II AUSTRALIA 10 DOLLARS IRB |
| Reverse description | An elaborate allegorical composition across a deeply mirrored proof field illustrating the evolution of numerical systems throughout human history. The central motif features a detailed abacus rendered in high relief, flanked by a golden ratio spiral and a Fibonacci-inspired circular diagram. Surrounding these central elements is a rich array of numerical symbols spanning multiple civilisations and eras, including Roman numerals, Arabic numerals, tally marks, Braille notation, binary code, the mathematical constant pi, an infinity symbol, and a modern electronic calculator depicted in the lower centre. The legend is divided between the upper border, reading AUSTRALIAN KOOKABURRA 2004 10 OZ. 999 SILVER, and the lower border, reading EVOLUTION OF NUMBERS. |
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