In 2007, to celebrate Great Britons and the Life of Sir Alexander Fleming, the Royal Mint released on behalf of Guernsey a Limited Issue Sir Alexander Fleming £5 Five Pound Silver Proof Coin struck in solid .925 Sterling Silver.
The reverse depicts Alexander Fleming, while the obverse has the stunning portrait of Her Majesty 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.