
Obverse: | Queen Elizabeth II - Design by Raphael Maklouf.
Legend: ELIZABETH. II. AUSTRALIA 2,500 DOLLARS |
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Reverse: | Koala on Tree Branch - Design by James Brown.
Legend: THE AUSTRALIAN KOALA 10OZ. .9995 PLATINUM - 1991 |
| Edge: | Reeded - continuous mill. |
| Weight: | 311.691 grams. |
| Size: | 60.30 mm (diameter) 7.90 mm (thickness). |
| Composition: | .9995 Fine Platinum. |
| Platinum Content: | 10.00 oz. |
| Mintage: | Perth: Limit - 100; Actual - 31. |
| Mintmarks: | None. |
Valuation : 1991 Ten Ounce Platinum $2,500 - Koala on Tree Branch
Notes:
The reverse design of the 1991 large platinum proof issues (Kilogram, 10 ounce and 2 ounce) differs from that used on the smaller proof platinum coins (1 ounce to twentieth ounce) and is the same as the James Brown design used on the 1990 proof platinum issues.
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