| Issuer | Australia |
| Year | 2017-2018 |
| Type | Non-circulating coin |
| Value | 1 Dollar |
| Currency | Dollar (1966-date) |
| Composition | Silver (.9999) (Pad Printed) |
| Weight | 31.1035 g |
| Dimensions | 40.6 mm |
| Thickness | 3.5 mm |
| Shape and Technique | Round Milled, Coloured |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#3394 |
| 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 1 DOLLAR IRB |
| Reverse description | A colourful celebratory image of gifts, a party hat, streamers and a cupcake in colour, along with musical notes. The design includes the inscription ‘Happy Birthday’, the 2020 year-date, the weight and fineness, and The Perth Mint’s traditional ‘P’ mintmark. |
| Reverse script | Latin, Latin (cursive) |
| Reverse lettering | 2018 1oz 9999 SILVER Happy Birthday P JM |
| Edge | Reeded |
| Mint | P Perth Mint, Australia(1899-date) |
| Mintage | 2017 P - BU Coloured - 2 970 2018 P - BU Coloured - 1 739 |
| Catalog ID | 4349534720 |
| Comments |
