| Issuer | Australia |
| Year | 1985-2019 |
| Type | Standard circulation coin |
| Value | 20 Cents |
| Currency | Dollar (1966-date) |
| Composition | Copper-nickel (75% Copper, 25% Nickel) |
| Weight | 11.31 g |
| Dimensions | 28.52 mm |
| Thickness | 2 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#82, Schön#69 |
| Obverse description | 3rd portrait of Queen Elizabeth II facing right wearing the King George IV State Diadem |
| Obverse script | Latin |
| Obverse lettering | ELIZABETH II AUSTRALIA 1988 RDM |
| Reverse description | Platypus (Ornithorhynchus anatinus) and the numeral `20` |
| Reverse script | Latin |
| Reverse lettering | 20 SD |
| Edge | Reeded |
| Mint | |
| Mintage | 1985 - BU Year Set - 170 000 1985 - Circulation - 2 700 000 1985 - Proof Year Set - 74 089 1986 - BU Year Set - 180 000 1986 - Proof Year Set - 67 000 1987 - BU Year Set - 200 000 1987 - Proof Year Set - 69 684 1988 - BU International Coin Fair Set - 10 000 1988 - BU Year Set - 240 000 1988 - Circulation (None Found) - 174 000 1988 - Proof International Coin Fair Set - 3 000 1988 - Proof Year Set - 101 518 1989 - BU Year Set - 150 602 1989 - Proof International Coin Fair Set - 5 000 1989 - Proof Year Set - 67 618 1990 - BU Year Set - 103 766 1990 - Proof International Coin Fair Set - 1 985 1990 - Proof Year Set - 51 015 1991 - BU Singapore Coin Fair Set - 200 1991 - BU Year Set - 147 700 1991 - Proof Singapore Coin Fair Set - 1 000 1991 - Proof Year Set - 41 490 1992 - BU Year Set - 118 528 1992 - Proof Year Set - 56 367 1993 - BU Gumnut Baby Set - 27 000 1993 - BU Year Set - 86 068 1993 - Circulation (None Found) - 1 490 000 1993 - Proof Year Set - 40 255 1994 - BU Gumnut Baby Set - 39 958 1994 - BU Year Set - 91 492 1994 - Circulation - 14 300 000 1994 - Proof Year Set - 39 004 1995 - BU Gumnut Baby Set - 36 190 1995 - BU Year Set - 96 079 1995 - Proof Gumnut Baby Set - 6 704 1995 - Proof Year Set - 48 537 1996 - BU Gumnut Baby Set - 25 727 1996 - BU Year Set - 108 773 1996 - Circulation - 20 595 500 1996 - Proof Gumnut Baby Set - 3 985 1996 - Proof Year Set - 33 350 1997 - BU Gumnut Baby Set - 27 421 1997 - BU Year Set - 71 022 1997 - Circulation - 16 725 000 1997 - Proof Gumnut Baby Set - 3 617 1997 - Proof Year Set - 32 543 1998 - BU Koala Baby Set - 31 810 1998 - BU Year Set - 74 108 1998 - Circulation - 28 831 000 1998 - Proof Koala Baby Set - 5 269 1998 - Proof Year Set - 32 255 2019 - BU `Effigies Over Time` Set - 14 736 |
| Catalog ID | 5643788190 |
| Comments |
