In 2018 to celebrate the 100th Anniversary of the Royal Air Force RAF, the Royal Mint released a very Limited Issue F-35 Lightning II Piedfort £2 Two Pound Silver Proof Coin struck in solid .925 Sterling Silver part plated in pure 24 Carat Gold.
The reverse designed by Richard and Neil Talbot features the F-35 Lightning II and is the fifth and final coin in the Royal Air Force Series.
The obverse depicts the Fifth Portrait of Her Majesty Queen Elizabeth II 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 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 practice of striking piedforts is later and less frequent, but medieval and Tudor examples are known.