In 2022 to celebrate the Queen's Platinum Jubilee, the Royal Mint released a Limited Issue Platinum Jubilee Piedfort 50p Fifty Pence Silver Proof Coin struck in solid .925 Sterling Silver.
The reverse, designed by Osborne Ross features the numbers 70 paying tribute to the Queen's 70 years of duty and service while the obverse designed by John Bergdahl features the Queen on horseback reminiscent of previous jubilee designs.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.
Piedforts are coins which have been specially 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.