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Lonard de Vinci Codex Vallardi r. Vierge assise avec l'Enfant et Saint JeanBaptiste Tte de putto Plume et encre brune traits la pointe de mtal cm Museum Louvre Drawing of the Codex Vallardi acquired by the Louvre in March to the Milanese antique dealer Giuseppe Vallardi Study for the Madonna Litta Dessin du Codex Vallardi