Leonardo Da Vinci's 500-year-old Renaissance masterpiece has long been steeped in mystery, and even today the true identity of the woman with the alluring smile still far from certain.
Now members of Italy's National Committee for Cultural Heritage have revealed that by magnifying high resolution images of the Mona Lisa's eyes letters and numbers can be seen.
"To the naked the symbols are not visible but with a magnifying glass they can clearly be seen," said Silvano Vinceti, president of the Committee.
Then again, they're probably just cracks in the pigment, like when you look at clouds and see a duck or a horse. And with that, the plot thickens ...