In 2005 to celebrate famous bridges from the United Kingdom, the Royal Mint released a special Limited Issue Menai Straits Bridge Piedfort £1 One Pound Silver Proof Coin struck in solid .925 Sterling Silver Certified Slabbed and Graded by PCGS as PR70 DCAM.

The reverse depicts the Menai Straits Bridge designed by Edwina Ellis and the obverse is a portrait of Queen Elizabeth II, designed 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 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.

• Limited Mintage of 6,007 Worldwide
• Piedfort Double the Thickness and Weight of its Standard Counterpart
• Finished to Royal Mint's Proof Quality in Solid .925 Sterling Silver
• Certified Slabbed and Graded by PCGS as PR70 DCAM