Mona Lisa is stolen from the Louvre by Louvre employee Vincenzo Peruggia and is missing for two years.
1 year, 4 months, 14 days later
Vincenzo Peruggia attempts to sell the Mona Lisa to the directors of the Uffizi, and is caught. The painting is exhibited around Italy for two years before being returned to the Louvre.
After the return of the Mona Lisa after its theft, Eugène Denizard is again called upon to work on the painting. Denizard cleans the picture without solvent, and lightly touches up several scratches to the painting with watercolour.
2 years later
Uffizi returns the Mona Lisa to the Louvre.