This is a RARE, Vintage (2005) US first edition copy of the half blood prince with two unique errors. The two errors have been "highlighted" using the phone camera app to allow for easy visibility in the sale posting. However, there are NO actual markings in the actual book. There is also no folding or bending of the pages. The book was gently used and is like new, with only a slight imperfection on the outer sleeve of the book cover. (See pics posted) DETAILS ABOUT THE TWO ERRORS: Error #1) this hardcover copy of the book only has 652 pages instead of 672. Error #2) on page 100 (not page 99 like it is in later editions) it reads "and when you've got your eleven outstanding' O.W.L.s..." This number was corrected to ten in later published copies. Overall, this is the perfect addition to any true fan's collection. Please message me with any additional questions and I would be happy to answer them. Orders ship next day! ALL offers are welcome :)