Harry Potter & The Small Fortune

A copy of the first trade edition of Harry Potter and the Philosopher's Stone has sold for fetched £19,700 pounds at auction.

The book – the first in the series of seven books - was one of only 500 copies made of the edition, many of which were bought up by libraries.

As a result, pristine copies are scarce and highly sought-after.

The book, published in 1997, was only expected to make between eight and £12,000.

J.K. Rowling's stories of Harry Potter and his fellow wizards have sold over 335 million copies worldwide.