Based on a lost painting by Leonardo da Vinci, which was later copied by Peter Paul Rubens, this exceptional pietre dure was executed by Enrico Bosi. The artisan was renowned for the realism of his plaques, and this scene is particularly impactful, evoking the drama of this 1440 battle between the Italian League and the Republic of Milan. The delicacy of Bosi’s choice of stones, including onyx, jasper and agate, and the precision of their cuts make it a true masterpiece. Each piece is carefully chosen for both its color and pattern to perfectly convey the mood and movement of the scene. The result is a work of such cohesion as to have the perfect trompe l'oeil effect.