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Pisanello Codex Vallardi . Trois couples grotesques Plume et encre brune touches de lavis cm Museum Louvre Copy after Leonardo da Vinci's grotesques Drawing of the Codex Vallardi acquired by the Louvre in March to the Milanese antique dealer Giuseppe Vallardi Copie de grotesques de Lonard de Vinci Dessin du Codex Vallardi acquis