When the painting you see in the photo was bought more than 33 years ago, nobody paid much attention to the identity of this elegant gentleman holding a golden time piece in his hand, but now , after finding a seal containing the Medici coat of arms, experts at the Museum of Science in London believe that the man in the painting could be Cosimo I Medici, Grand Duke of Tuscany.
According to them, this painting may also be the oldest painting to show a true watch!Source Telegraph