正面: 6th crowned portrait of HM Queen Elizabeth II facing right, wearing the George IV State Diadem and the Victorian Coronation Necklace, engraver JC (Jody Clark). Ruler, regnal dates, country and date ↻ around ELIZABETH II 1952-2022 • AUSTRALIA 2023. 背面: Platypus swimming; engraver at left SD (Stuart Devlin), denomination superimposed 20 (cents).
