In 2007, to celebrate the Diamond Wedding of Queen Elizabeth II and Prince Philip, the Royal Mint released a very Limited Issue Diamond Wedding Piedfort £5 Five Pound Silver Proof Coin struck in solid .925 Sterling Silver and has been Certified Slabbed and Graded by PCGS as PR69 DCAM.

The reverse design is the rose window of Westminster Abbey designed by Emma Noble and the obverse is a co-joint portrait of Queen Elizabeth and Prince Philip by Ian Rank Broadley.
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.

• Limited Mintage of 2,000 Worldwide
• Piedfort Double the Thickness and Weight of its Standard Counterpart
• Finished to Royal Mint's Proof Quality in Solid .925 Sterling Silver
• Celebrating the Diamond Wedding of Her Majesty Queen Elizabeth II and Prince Philip
• Certified Slabbed and Graded by PCGS as PR69 DCAM