In 2016, to celebrate the Her Majesty Queen Elizabeth II 90th Birthday, the Royal Mint released a Limited Issue Brilliant Uncirculated Queens 90th Birthday £20 Twenty Pound Silver Coin struck in solid fine .999 Silver weighing one half of an ounce of pure Silver.
The reverse designed by Christopher Hobbs depicts a circle of roses and 'E II R 90' in the center.
The obverse design features the Fifth Portrait of Queen Elizabeth II designed by Jody Clark .
Royal Mint Product Code - UK1620QU