In 2013 to celebrate the 150th Anniversary of the London Underground, the Royal Mint released a Limited Issue London Underground Roundel £2 Two Pound Silver Proof Coin struck in solid .925 Sterling Silver.
The reverse designed by Edwina Ellis depicts the London Underground Roundel Logo while the
obverse design features the stunning portrait of Queen Elizabeth II by Ian Rank Broadley.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.