Illegible But Valuable-- Several centuries later, the signature of Guy Fawkes attests to the treatment he went through after the discovery of the "Gunpowder Plot" in 1606. Above it is a statement in which Fawkes admitted his part in the plot to blow up the Parliament, Following the discovery of the conspiracy. The signature is believed to have been affixed after torture, reads the label. April 15, 1947. (Photo by Wide World Photos).