The fifth crowned portrait of HM Queen Elizabeth II facing right, wearing the George IV State Diadem and drop earrings.

The George IV State Diadem, officially the Diamond Diadem, is a type of crown that was made in 1820 for King George IV. The diadem is worn by queens and queens consort in procession to coronations and State Openings of Parliament. The piece of jewellery has been featured in paintings and on stamps and currency. It can be seen in the Queen's Gallery at Buckingham Palace.

ELIZABETH II DEI GRATIA REGINA FIDEI DEFENSATRIX means Elizabeth II, by the grace of God, Queen and Defender of the Faith.

Engraver: Jody Clark

Depicts the Queen’s signature in the centre and flags representing the Commonwealth nations above.

The Commonwealth of Nations, simply referred to as the Commonwealth, is a political association of 56 member states, the vast majority of which are former territories of the British Empire. The Commonwealth dates back to the first half of the 20th century with the decolonisation of the British Empire through increased self-governance of its territories. The current Commonwealth of Nations was formally constituted by the London Declaration in 1949, which modernised the community and established the member states as "free and equal". Member states have no legal obligations to one another but are connected through their use of the English language and historical ties.

The head of the Commonwealth is currently Queen Elizabeth II; the 2018 Commonwealth Heads of Government Meeting appointed Charles, Prince of Wales, to be her designated successor, although the position is not hereditary. Elizabeth II is the head of state of 15 member states, known as the Commonwealth realms, while 36 other members are republics and 5 others have different monarchs.

Engraver: Patrick James (P. J.) Lynch

The edge inscription is inspired by a speech delivered by Her Majesty for her 21st birthday