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Pic: Ewbank'sAuctioneers/BNPS

PICTURED: The dust jacket proof for the Harry Potter and the Chamber of Secrets - Also included in the sale is a proof edition of Harry Potter and the Chamber of Secrets which comes with a proof design dust jacket. It is not known how many proof copies were made for the second book in the series but it is thought to be around 400.

A rare uncorrected proof copy of the first Harry Potter book which referred to its unknown creator as 'J.A. Rowling' is tipped to sell for £25,000.

Only 200 copies were made of Harry Potter and the Philosopher's Stone in 1997 when the author was unheard of.

The proof predates the first edition and was not sold or made available to the public.

They were sent to booksellers and reviewers to boost publicity just before the first editions started coming on sale.

It is said to be in very good condition, coming in its original white and yellow wrapping.