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Finding the $100 Million Da Vinci: A Love Story

Art dealer Robert Simon bought a painting by an unknown artist in 2005, and asked his friend Dianne Modestini to restore it. Her work on the piece eventually led to the discovery that it was Leonardo da Vinci's "Salvator Mundi," and helped her through one of the hardest times in her life. Photo: Robert Libetti/The Wall Street Journal