The book that originally cost 13p was sold at auction for £11,000, with its premium total amounting to £14,432.
The uncorrected proof copy of Harry Potter and the Philosopher’s Stone was bought in 1997 from a second-hand shop with two other books for a total of 40p.
The seller, now 52, bought the book when she was 26 and living in Crystal Palace “I didn’t have much money but I always liked to treat myself to a browse round second-hand bookshops on Saturday mornings.
“I dropped into one of my usual haunts, one of the second-hand bookshops just off the main road in Crystal Palace, looking for some Agatha Christies. Piles of books were all jumbled up in baskets on the floor with a maximum price of 40p.”
