At the time of decimalisation in 1971, the United Kingdom Crown coin (equal to 5 shillings) was redenominated as a 25p coin and pieces struck prior to 1990 - all the way back to 1818 - continue to be legal tender for that amount. The old denomination had been a regular circulating coin in the 19th century, but in the 20th century it became more of a commemorative denomination.
The Royal Mint continued issuing commemorative coins in the same format - using the traditional coin dimensions, but in copper-nickel. These were initially also denominated as 25 pence but the "Crown" was changed in 1990 to a commemorative £5 (five pound) coin, having the same dimensions and weight but with a face value twenty times as great.
The denomination is used to mark special occasions, usually royal in theme, rather than for use in general circulation. Although not circulating, these coins are legal tender.
This commemorative £5 Crown-sized coin is part of an 18-coin collection issued by the Royal Mint for the London 2012 Summer Olympics.
The 2012 Summer Olympics, formally the Games of the XXX Olympiad and commonly known as London 2012, took place in London and to a lesser extent across the United Kingdom from 25 July to 12 August 2012.
A Celebration of Britain is a collection consisting of 18 Crown-sized coins denominated as £5 which were released one at a time, every 28 days - so that the first six are dated 2009 and the last twelve are dated 2010. All feature the London 2012 logo, which is colourised on the reverse. The coins are grouped around three themes, with six coins dedicated to Mind, Body and Spirit respectively, and each theme having a differently coloured logo.
The White Rabbit coin is part of the Spirit of Britain series and features the White Rabbit from Lewis Carroll’s "Alice in Wonderland". This coin celebrates British comedy which is known for its consistently quirky characters, plots and settings, and has produced some of the most famous and memorable comic actors and characters in the last 50 years.
The White Rabbit is a fictional character in Lewis Carroll's book Alice's Adventures in Wonderland. He appears at the very beginning of the book, in chapter one, wearing a waistcoat, and muttering "Oh dear! Oh dear! I shall be too late!" Alice follows him down the rabbit hole into Wonderland. Alice encounters him again when he mistakes her for his housemaid Mary Ann and she becomes trapped in his house after growing too large. The Rabbit shows up again in the last few chapters, as a herald-like servant of the King and Queen of Hearts.
The inscription "All touched by a common genius" is a quotation from T S Eliot. | 
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