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 Capitan James Cook in front of a mate on the beach left sailing ship HMS Endeavour, all inside decorated ring interrupted by the legend.

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.

In three voyages Cook sailed thousands of miles across largely uncharted areas of the globe. He mapped lands from New Zealand to Hawaii in the Pacific Ocean in greater detail and on a scale not previously achieved. As he progressed on his voyages of discovery he surveyed and named features, and recorded islands and coastlines on European maps for the first time. He displayed a combination of seamanship, superior surveying and cartographic skills, physical courage and an ability to lead men in adverse conditions.

Cook was attacked and killed while attempting to kidnap the native chief of Hawaii during his third exploratory voyage in the Pacific in 1779.

HMS Endeavour, also known as HM Bark Endeavour, was a British Royal Navy research vessel that Lieutenant James Cook commanded on his first voyage of discovery, to Australia and New Zealand, from 1769 to 1771.