J.K. Rowling's unofficial farewell book to the adventures of boy wizard Harry Potter which made her the world's wealthiest writer, goes on sale on tomorrow.
Proceeds from 'The Tales of Beedle the Bard', expected to become an international bestseller even though the seven-book Potter series is over, will go to a charity for vulnerable children in Eastern Europe co-founded by Rowling.
Beedle the Bard is a collection of five fairy tales and is mentioned in the final Potter book 'Harry Potter and the Deathly Hallows' as having been left to the boy wizard's friend Hermione Granger by Albus Dumbledore, headmaster of Hogwarts school.
Only one of the five stories - 'The Tale of the Three Brothers' - was recounted in the Potter book, and the volume contains clues that were to prove crucial to Potter's final mission to destroy Lord Voldemort.
Indicating the interest the new book is likely to generate with Potter fans young and old, one of seven hand-written, illustrated copies of Beedle the Bard made by Rowling fetched Â£2.7million at auction a year ago.
Online book store Amazon, which bought that copy, is printing up to 100,000 collector's' editions, each costing Â£67, and the global print run will be around 7.5million copies.