Australia 2016 Half Sovereign PCGS PR69 – one of three with only two finer. If you’d like the finest example, see here: https://topendcoins.com.au/product/australia-2016-half-sovereign-pcgs-pr70/
This coin sells at the same price as Perth Mint’s product but has the added value of a PCGS guarantee. This makes the coin easier to sell over the internet.
You can verify the certificate of this coin by clicking on the button below: