In 2007, to celebrate the Bicentenary of the Abolition of the Slave Trade in the British Empire, the Royal Mint released a Limited Issue Slave Trade Piedfort £2 Two Pound Silver Proof Coin struck in solid .925 Sterli ng Silver and Certified Slabbed and Graded by PCGS as PR69 DCAM.
The reverse design shows the date "1807" with the "0" depicted as a broken chain link surrounded by the inscription "AN ACT FOR THE ABOLITION OF THE SLAVE TRADE" and the date "2007" with an edge description "AM I NOT A MAN AND A BROTHER", designed by David Gentleman.
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.