For fans of the boy wizard, this could be the most coveted copy of all the "Harry Potter" books in the world.
A first edition copy of "Harry Potter and the Philosopher's Stone" that contains author J.K. Rowling's notes and original illustrations fetched 150,000 pounds ($228,000) at a London auction on Tuesday.
Sotheby's said the work, offered as part of a charity book sale jointly organized with the English PEN writers' association, was sold to an anonymous bidder by telephone.
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Rowling peppered the book with many personal annotations, including editorial decisions, comments on the process of writing and a note on how she came to create the game of Quidditch.
She also drew about two dozen illustrations in the copy, including a sleeping baby Harry on a door step and an Albus Dumbledore Chocolate Frog card.
As part of the fundraising event, Rowling and dozens of other best-selling authors were asked to "scribble second thoughts, marginalia or drawings" on a first-edition copy of one of their books.
A copy of Roald Dahl's best-selling children's book "Matilda" containing new drawings by illustrator Quentin Blake fetched 30,000 pounds ($45,500), while an annotated copy of Kazuo Ishiguro's acclaimed novel "The Remains of the Day" was sold for 18,000 pounds ($27,300).
Other participating authors in the charity sale included Ian McEwan, Seamus Heaney, Lionel Shriver and Yann Martel.
In all, the sale raised a total of 439,200 pounds ($666,310).