Introduction of Jody Clark effigy on Australian coins
Although the Jody Clark effigy of Queen Elizabeth II was launched on the coins of Great Britain in 2015, it did not see use in Australia until part-way through 2019, and even then, the effigy was different to that used on the coins of Great Britain.
The transition from the Ian Rank-Broadley to Jody Clark effigy occurred during 2019 - initial coins and all mint sets were produced using the old Ian Rank-Broadley effigy and part-way through the year the transition to the Jody Clark effigy occurred. No 2019 Jody Clark coins were made available in sets. Although the 2019-2020 Royal Australian Mint Annual Report mentions 2020-dated Ian Rank-Broadley 50c pieces and $1 coins, they have confirmed the report was in error and that both are in fact Jody Clark coins.
As with denominations in previous years, the Royal Australian Mint slightly modified the Jody Clark effigy in 2020 - on 2019-dated coins the front tip of the crown is completely under the first A in AUSTRALIA while on 2020-dated coins the front tip of the crown is not completely under the first A in AUSTRALIA. The reason for the change is unknown but no doubt the Royal Australian Mint made the change to optimise coin production.