Uncorrected 1997 proof copy of Harry Potter and the Philosopher’s Stone – £21,000 at Ewbank’s.

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One of around 200 such copies, in which the author’s name is incorrectly given as ‘J.A.Rowling’ on the title-page, it did rather better than the estimate. It sold for £21,000.

Bid to £1400 in that Surrey auction was a paperback copy of the fourth book in the series, Harry Potter and the Goblet of Fire of 2000, that was used during the making of the 2005 film version.

It was signed by six members of the cast, among them Daniel Radcliffe (Harry), Emma Watson (Hermione Grainger) and Rupert Grint (Ron Weasley).