As a young man, Michelangelo sculpted a sleeping cupid. He, or an accomplice, then buried it in acidic earth to give it an appearance of great age. The plan was to pass it off as an antiquity, to fetch a higher price. The artificially aged sculpture was bought by Cardinal Raffaello Riario of San Giorgio who, when he learned of the forgery, demanded his money back. But impressed by Michelangelo's talent, the Cardinal didn't press charges.
More…
Art Forgery