| 发行方 | Australia |
|---|---|
| 年份 | 1991 |
| 类型 | Non-circulating coin |
| 面值 | 20 Cents |
| 货币 | Dollar (1966-date) |
| 材质 | Silver (.925) |
| 重量 | 13.09 g |
| 直径 | 28.65 mm |
| 厚度 | 2.5 mm |
| 形状 | Round |
| 制作工艺 | Milled |
| 方向 | Medal alignment ↑↑ |
| 雕刻师 | |
| 流通至 | |
| 参考资料 | KM#82a |
| 正面描述 | 3rd portrait of Queen Elizabeth II facing right wearing the King George IV State Diadem. |
|---|---|
| 正面文字 | Latin |
| 正面铭文 | ELIZABETH II AUSTRALIA 1991 RDM |
| 背面描述 | Platypus in water, value superimposed. |
| 背面文字 | Latin |
| 背面铭文 | 20 SD |
| 边缘 | Reeded |
| 铸币厂 | |
| 铸造量 | 1991 - Proof in Masterpieces in Silver Set - 25 000 |
| Numisquare 编号 | 1790144940 |
| 备注 |