A British auction house will sell 13 paintings next month attributed to a minor Austrian-born amateur artist: Adolf Hitler. The works, which include a supposed self-portrait signed "AH," were found by a soldier in 1945, Reuters reports, though lingering doubts remain about authenticity. Two years ago, 21 Hitler paintings sold for $172,000. "They're not exactly the greatest pictures in the world," said the historical documents expert holding the sale. (More art auction stories.)