Leonardo's unidentified assistant—who painted the Prado's Mona Lisa—also copied Saint Anne and the Salvator Mundi, new research suggests

Earliest copy of Mona Lisa found in the Prado – The History Blog

Is the $450 Million Leonardo da Vinci Painting a Fake? - Bloomberg

Leonardo da Vinci may have painted another 'Mona Lisa.' Now, monalisa

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The secret scientists pried from da Vinci's 'Mona Lisa

Mona Lisa' copy draws crowds at Spain's Prado - The San Diego

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The secret scientists pried from da Vinci's 'Mona Lisa

Leonardo da Vinci 500 Years Later: Theories Still Abound - The

Leonardo da Vinci may have painted another 'Mona Lisa.' Now

Unknown Leonardo da Vinci sketch valued at $15.8m - BBC News

Scientists pry a secret from the 'Mona Lisa' about how Leonardo

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Mona Lisa' copy draws crowds at Spain's Prado - The San Diego

That $450 Million Leonardo? It's No Mona Lisa. - The New York Times