This is a special gift packaging version of the standard Australian proof coin set for the year. It contains all the regular circulating denominations, in Proof FDC grade.
The Royal Australian Mint says about this year's set:
Special events and sentimental milestones mark each year of our lives. The Royal Australian Mint’s artists and engineers produce minted treasures which are eternal mementos of each year in time.
As your loved ones celebrate special moments in 2020, be sure that they are truly commemorated with this elegant six-coin set. Featuring the timeless designs of the Mint’s circulating coins, finished to our precise proof standard, it comes with your choice of ‘Congratulations’, ‘Anniversary’ or ‘Happy Birthday’ wraparound packages. Their stylish presentation box also includes an engraveable plate for your personalised message." | 
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