A rare proof copy of Harry Potter and the Philosopher's Stone is for sale. What makes this book special is a typo. The proof contains a typo in the name of J.K. Rowling.
The book is expected to sell for $2,800 to $5,600 when it goes tor auction Thursday as part of the auctioneer's Entertainment, Memorabilia & Movie Props sale.
The typo in question is J.A. Rowling instead of J.K. Rowling.