| Issuer | Australia |
| Year | 2000 |
| Type | Non-circulating coin |
| Value | 20 Dollars |
| Currency | Dollar (1966-date) |
| Composition | Bimetallic: gold (.999) centre in silver (.999) ring (Pad printed) |
| Weight | 13.4 g |
| Dimensions | 32.1 mm |
| Thickness | 3.5 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#519 |
| Obverse description | 4th portrait of Queen Elizabeth II facing right wearing the Girls of Great Britain and Ireland Tiara |
| Obverse script | Latin |
| Obverse lettering | ELIZABETH II AUSTRALIA 20 DOLLARS IRB |
| Reverse description | A satellite view of Earth. The gold centerpiece is divided into two areas separated by the International Dateline. The area to the west is experiencing the first day of the year 2000 with the pad-printed date 01-01-2000. The area to the east, which is still in the last day of 1999, is pad-printed in deep ocean blue with the date 31-12-1999. Gisbourne in New Zealand, widely acclaimed as the first official millennium city, is also highlighted. |
| Reverse script | Latin |
| Reverse lettering | THIRD MILLENNIUM FIRST DAY 2000 Gisbourne 01-01-2000 31-12-1999 |
| Edge | Reeded |
| Mint | P Perth Mint, Australia(1899-date) |
| Mintage | 2000 - Proof - 7 500 |
| Catalog ID | 2950186580 |
| Comments |
