Fourth crowned portrait of HM Queen Elizabeth II facing right, wearing the Girls of Great Britain and Ireland tiara.

The Girls of Great Britain and Ireland tiara was a wedding present in 1947 from her grandmother, Queen Mary, who received it as a gift from the Girls of Great Britain and Ireland in 1893 on the occasion of her marriage to the Duke of York, later George V. Made by E. Wolfe & Co., it was purchased from Garrard & Co. by a committee organised by Lady Eve Greville. In 1914, Mary adapted the tiara to take 13 diamonds in place of the large oriental pearls surmounting the tiara. At first, Elizabeth wore the tiara without its base and pearls but the base was reattached in 1969. The Girls of Great Britain and Ireland Tiara is one of Elizabeth's most recognisable pieces of jewellery due to its widespread use on British banknotes and coinage.

Engraver: Ian Rank-Broadley

The reverse design features the New South Wales Coat of Arms granted by royal warrant of King Edward VII dated 11 October 1906. The shield shows a blue field with a silver cross voided red with a gold star on each arm of the cross and a lion in the centre known as the 'Lion in the South'. There is a golden fleece in the first and fourth quarters, and a wheat sheaf in the second and third quarters. The crest is a rising sun with each of the sun's rays tipped with a little flame on a wreath. The supporters (a lion and a kangaroo) are usually depicted standing upon the motto ribbon as they hold the shield in an upright position. The motto contains the Latin inscription "Orta recens quam pura nites" which, in English, means "Newly risen, how brightly you shine".

The Colony of New South Wales was founded as a penal colony in 1788 when the First Fleet landed in what became Sydney Cove. It originally comprised more than half of the Australian mainland. The colony also included the island territories of New Zealand, Tasmania (Van Diemen's Land), Lord Howe Island, and Norfolk Island. During the 19th century, most of the colony's area was detached to form separate British colonies that eventually became the separate country of New Zealand and the various states and territories of Australia. NSW is the most populous of the Australian states with Sydney (the capital city) having nearly 5 million people.