A battered Harry Potter book bought for just 30p is tipped to fetch £5,000 - after it turned out to be an extremely rare first edition.
The well-thumbed copy of Harry Potter and the Philosopher’s Stone was snapped up after a library withdrew it from use.
Experts confirm it was one of only 500 published by Bloomsbury in 1997 and one of just 300 sent to libraries around the UK.