The couple – then known as Princess Elizabeth and Lieutenant Philip Mountbatten – married at Westminster Abbey on November 20, 1947.
The 50 cent coins to commemorate their 70th wedding anniversary – approved by Buckingham Palace – display the royal monogram 'EP', alongside sprays of wattles with seven blossoms symbolising the couple's seven decades of marriage.
There are wreaths of myrtle to represent the Queen and Prince Philip's children, grandchildren and great-grandchildren with the heraldic symbol of the Princes in direct line of succession pinned to each wreath.
Now 91 and 96 respectively, the Queen and Prince Philip are understood to be marking the occasion privately.
The new 50c commemorative coin. Source: Royal Australian Mint
Royal Australian Mint acting chief executive officer Sarah Polhill said the Mint chose to combine the ancient visual languages of heraldry and floriography to portray the lineage and the abiding line of succession of the House of Windsor.
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"The coin design celebrates the 70 years of marriage and the family that the royal couple have built together during this time," Ms Polhill said.
"The design features symbolic references to family, marriage and love, celebrating the enduring union of Queen Elizabeth II and Prince Philip.
"Since opening in 1965, the Mint has had a long-standing and proud role in marking significant royal milestones and these coins will make a great addition to the Mint’s popular royal collection."
There are two versions of the coins - silver proof and cupro nickel.
A total of 5,000 silver coins, each costing $80, and 30,000 cupro nickel uncirculated coins, each retailing at $12.50, were made. These can be bought from .
This week, new official portraits were released of the pair at Windsor Castle to mark the anniversary.
