Third crowned portrait of HM Queen Elizabeth II facing right, wearing the George IV State Diadem.

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.

Engraver: Raphael David Maklouf

Depicts the barque HMS Endeavour, commanded by Captain James Cook on his first exploration of the Pacific, sailing to the right, passing in front of Mount Taranaki (Mount Egmont), denomination above left, legend below.

Captain James Cook (1728–1779) was a British explorer, navigator, cartographer, and captain in the Royal Navy. Cook made detailed maps of Newfoundland prior to making three voyages to the Pacific Ocean, during which he achieved the first recorded European contact with the eastern coastline of Australia and the Hawaiian Islands, and the first recorded circumnavigation of New Zealand.

The first voyage of James Cook was a combined Royal Navy and Royal Society expedition to the south Pacific Ocean aboard HMS Endeavour, from 1768 to 1771. Departing from Plymouth-Dock (Devonport) in August 1768, the expedition crossed the Atlantic, rounded Cape Horn and reached Tahiti in time to observe the transit of Venus. Cook then set sail into the largely uncharted ocean to the south, stopping at the Pacific islands of Huahine, Borabora and Raiatea to claim them for Great Britain, and unsuccessfully attempting to land at Rurutu.

In September 1769 the expedition reached New Zealand. Cook and his crew spent the following six months charting the New Zealand coast, before resuming their voyage westward across open sea. In April 1770 they became the first Europeans to reach the east coast of Australia, making landfall at Point Hicks, and then proceeding to Botany Bay.

The expedition continued northward along the Australian coastline, narrowly avoiding shipwreck on the Great Barrier Reef. In October 1770 the badly damaged Endeavour came into the port of Batavia in the Dutch East Indies, her crew sworn to secrecy about the lands they had discovered. They resumed their journey on 26 December, rounded the Cape of Good Hope on 13 March 1771, and reached the English port of Deal on 12 July. The voyage lasted almost three years.

Engraver: George James Berry