For 2020 the Royal Mint in conjunction with the Natural History Museum released a special Dinosauria collection with the third coin a Limited Issue Hylaeosaurus 50p Fifty Pence Gold Proof Coin struck in solid 22 Carat Gold.
The reverse designed by Robert Nicholls features the Hylaeosaurus while the obverse features the Fifth Portrait of Her Majesty Queen Elizabeth II by Jody Clark.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.