Like many other mints, the Royal Mint issues bullion coins in precious metals, having much higher intrinsic value than their face value. The five ounces (5 oz) gold coins are denominated as either ten pounds (£10) or five hundred pounds (£500).
The coins are legal tender but are not intended for circulation. They are targeted at bullion investors or collectors who appreciate the special editions as pieces of art. The coins are typically "one-year" types usually issued in parallel with smaller denominations with the same reverse designs.
This commemorative coin celebrates the Sapphire Jubilee (65th anniversary) of the coronation of Queen Elizabeth II.
The Royal Mint says:
"In 2018 we celebrate the 65th anniversary of the coronation of Her Majesty The Queen and look back to 2 June 1953, a day full of tradition, colour and hope, the result of 14 months of preparation. The organising Coronation Committee was chaired by The Queen’s husband, His Royal Highness The Prince Philip, Duke of Edinburgh, who played a key role in ensuring that every detail was considered. It’s believed that Prince Philip proposed the idea to televise the ceremony, an innovation that allowed the nation, and the world, to witness a coronation for the first time.
It set the path for a warmer and more accessible relationship between the Royal Family and the public that continues to this day. This warmth is never more apparent than when the nation joins together to celebrate major royal events. In 2012, the year that the nation celebrated The Queen’s Diamond Jubilee, The Royal Mint issued the first ever kilo coin. It has gone on to become a favourite of the discerning collector. This limited edition 50 mm Proof quality coin provides an impressive canvas for a new, exclusive design by Dominique Evans, a graphic designer at The Royal Mint. The coin is struck in 999 fine gold and is presented in a Royal Mint case with a booklet that reveals more on Dominique’s design and the story behind this historic celebration." | 
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