Italian art expert Mauricio Seracini says he is on the verge of discovering a long-lost Leonardo da Vinci masterpiece ' The Battle of Anghiari ' hidden in a secret cavity behind a wall of Palazzo Vecchio in Florence; Italy. October 30;2009. On the computer we can see (above) A battle scene in Giorgio Vasari's fresco 'The Defeat of the Pisans at the Tower of San Vincenzo' which has similarities to Leonardo's 'the Battle of Anghiari' and (below) Drawing after Leonardo's cartoon for the Battle of Anghiari by Peter Paul Rubens (1577-1640) . Dated 17th Century.(Louvre;Paris).