In 2016, to celebrate the 90th Birthday of Her Majesty Queen Elizabeth II, the Royal Mint released a Limited Issue Queens 90th Birthday £500 Five Hundred Pound Silver Proof Kilo Coin struck in solid fine .999 Silver weighing One Kilo 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.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.
Royal Mint Product Code - UK1690SK