For 2017 the Royal Mint released it's yearly Limited Issue Britannia £500 Five Hundred Pound Gold Proof Coin struck in solid fine 999.9 Gold weighing five ounces of pure Gold.
The portrait designed by Louis Tamlyn depicts a contemporary reverse design, reflecting a time of political change when the eyes of the world have often been on Britain.
His design also contains the Trident Mint Mark that celebrates this anniversary.
The obverse design features Jody Clark's Fifth Portrait of Her Majesty Queen Elizabeth II.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.