| Emitent | Australia |
|---|---|
| Rok | 1991 |
| Typ | Non-circulating coin |
| Nominał | 20 Cents |
| Waluta | Dollar (1966-date) |
| Skład | Silver (.925) |
| Waga | 13.09 g |
| Średnica | 28.65 mm |
| Grubość | 2.5 mm |
| Kształt | Round |
| Technika | Milled |
| Orientacja | Medal alignment ↑↑ |
| Rytownik(zy) | |
| W obiegu do | |
| Źródło(a) | KM#82a |
| Opis awersu | 3rd portrait of Queen Elizabeth II facing right wearing the King George IV State Diadem. |
|---|---|
| Pismo awersu | Latin |
| Legenda awersu | ELIZABETH II AUSTRALIA 1991 RDM |
| Opis rewersu | Platypus in water, value superimposed. |
| Pismo rewersu | Latin |
| Legenda rewersu | 20 SD |
| Krawędź | Reeded |
| Mennica | |
| Nakład | 1991 - Proof in Masterpieces in Silver Set - 25 000 |
| ID Numisquare | 1790144940 |
| Uwagi |