Obverse: | Queen Elizabeth II - Design by Raphael Maklouf.
Legend: ELIZABETH. II. AUSTRALIA 100 DOLLARS |
Reverse: | Koala on Tree Trunk - Design by James Brown.
Legend: THE AUSTRALIAN KOALA 1OZ. .9995 PLATINUM - 1990 |
| Edge: | Reeded - continuous mill - 180 Serrations. |
| Weight: | 31.185 grams. |
| Size: | 32.10 mm (diameter) 2.70 mm (thickness). |
| Composition: | .9995 Fine Platinum. |
| Platinum Content: | 1.00 oz. |
| Mintage: | Not sold individually - Perth. |
| Mintmarks: | None. |