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 a Megalosaurus, between Mesozoic plants. Below a fossilised dinosaur right lower jaw from Stonesfield near Oxford. The designer's initials RN (for Robert Nicholls) are above the exergue line, to the right of the jaw bone.

In 1824 William Buckland (1784–1856), an eccentric clergyman and palaeontologist produced the first scientific description of what became known as a dinosaur based on fragments of jaw and bone found in Oxfordshire. Buckland named the creature Megalosaurus (meaning "Great Lizard", from Greek μέγας, megas, meaning 'big', 'tall' or 'great' and σαῦρος, sauros, meaning 'lizard'). It was the first genus of non-avian dinosaur to be validly named.

Megalosaurus is an extinct genus of large meat-eating theropod dinosaurs of the Middle Jurassic period (Bathonian stage, 166 million years ago) of Southern England. Although fossils from other areas have been assigned to the genus, the only certain remains of Megalosaurus come from Oxfordshire and date to the late Middle Jurassic. Early depictions showed an animal walking on four legs with a posture like a hippopotamus. Today we understand Megalosaurus was a theropod, a large bipedal predator that roamed Britain during the Middle Jurassic period 170 to 155 million years ago.