Because the museum's acquisition of the chariot in 1903 predates by six years Italy's first laws restricting export of items that carry "cultural and artistic values," the chariot's sale was legal at the time of purchase, though debated by the contemporary press.
The principle subjects on the three parts of the chariot box refer to the life of a hero, most likely Achilles. In the center, Achilles receives armor from Thetis, his mother.
On one side, he engages in combat with another hero, possibly Memnon; on the other side, he appears in a chariot drawn by winged horses. While the style and subject of the reliefs look to Greek art and myth, the treatment of the scenes is thoroughly Etruscan.
Etruscan; From Monteleone, Italy Bronze H. 51 1/2 in. (130.8 cm) Rogers Fund, 1903