1889 Crown
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The 2007 Slavery gold proof two pounds piece commemorates the bicentenary of the abolition of the slave trade within the British Empire, 1807-2007.
Designed by David Gentleman, the reverse features 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 inscription ‘AM I NOT A MAN, AND A BROTHER’.
Queen Elizabeth II’s fourth portrait can be seen on the obverse, designed by Ian Rank-Broadley.
The 2007 Slavery gold proof two pounds piece is made of 22 carat gold (Gold Fineness of 0.916), and weighs 15.98 grams. It has a diameter of 28.40mm.
The outer disc is made of ‘red’ gold, with the inner disc being ‘yellow’ gold. 
The coin was originally housed in a Royal Mint acrylic screw top capsule, presented in its Royal Mint green leatherette case, accompanied with an individually numbered certificate of authenticity (COA).
1,000 2007 Slavery gold proof two pounds pieces were issued by the Royal Mint in 2007.
In 2007 another gold two-pound coin, Act of Union Tercentenary, was also released.