For 2021 to celebrate the Queens 95th Birthday, the Royal Mint released a Limited Issue Queens 95th Birthday Piedfort £5 Five Pound Silver Proof Coin struck in solid .925 Sterling Silver.
The reverse designed by Timothy Noad features "EIIR" with the inscription My Heart and My Devotion with the dates 1926 - 2021 while the obverse features the Fifth Portrait of Her Majesty Queen Elizabeth II both designed by Jody Clark.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.
Piedforts are coins which have been especially struck on thicker than normal blanks.
As their name suggests they are closely associated with France, where from the twelfth century, they were apparently issued by the Kings as presentation pieces.
In Britain the practise of striking piedforts is later and less frequent, but medieval and Tudor examples are known.