This commemorative 2012 £5 Crown-sized coin is the fourth and last of a series of four coins issued by the Royal Mint for the London 2012 Summer Olympics Countdown. Mintage is 65,275 worldwide.
The obverse of the coins shows the crowned mature head of Queen Elizabeth II facing right (her effigy known as the "Fourth Portrait"). The Queen wears the "Girls of Great Britain and Ireland" diamond tiara, a wedding gift from Queen Mary (Her Majesty's grandmother) in 1947 - which she also has on the Machin and the Gottwald portraits.
In small letters below the head, the artist's initials IRB (for Ian Rank-Broadley).
Around the effigy is the monarch's legend: ELIZABETH · II D · G · REG · F · D FIVE POUNDS. Translated from Latin: Elizabeth the Second, by the Grace of God, Queen, Defender of the Faith, followed by the value and denomination in English.