bild

Dr Markus A. Frey, president of The Mona Lisa Foundation, shows a painting attributed to Leonardo da Vinci representing Mona Lisa, displayed during a presentation, Switzerland, Thursday, November 14, 2013. The Mona Lisa Foundation, a non-profit organisation based in Zurich, presents a painting and historical, comparative and scientific evidence, which demonstrates that there have always been two portraits of the Mona Lisa by Leonardo da Vinci, the 'Earlier Version,' made ten years earlier than the 'Joconde' that is displayed in Le Louvre in Paris, France. (KEYSTONE/Martial Trezzini)