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Mona Lisa MkI: Mysterious early version of Da Vinci’s most famous portrait has art experts baffled
GENEVA — The mystery behind the most enigmatic smile in art — Leonardo da Vinci’s “Mona Lisa” — just got a little more complicated.

In a coming-out party of sorts in Geneva, rounds of flashbulbs popped Thursday as the non-profit Mona Lisa Foundation pulled back the curtain to present what it claims is a predecessor of the world’s most famous portrait. (Laurent Gillieron / Keystone / The Associated Press / Files)