The horse is galloping, with its weight on its back legs and its front legs raised. Its tail is raised in a straight horizontal line behind him. The mane falls in waves on the back of the head and neck. The mouth is open in neighing attitude. It is standing on an integral square stand with two grooves incised on three sides of it.
The horse is finely modeled in a lively posture, with attention to details such as the trail of hair behind each leg and around the hooves. The body is rounded and the proportions are those of a young horse.

The modeling of the head is influenced by the style of the Greek Classical masterwork marble head of a horse, of the mid 5th century BC, from the Parthenon of Athens, now in the British Museum:
Cf. Janson, H. W. (ed.), pp. 331.

It may be compared with the head of the horse of the lamp in the Mildenberg Collection: Kozloff, A. P., editor, Mitten, D.G., Sguaitamatti, M., Mildenberg Collection, 1986, pp. 32-33, fig. 152.

Another parallel is the bronze horse head in the Naples Museum:
De Caro S., The National Archaeological Museum of Naples, 1996, pp. 118.

The jumping posture may be compared with the bronze horse of Alexander in the Equestrian statuette from Herculaneum: Ibid, p. 218.

See also:
Cf. Walker, A. S., editor, Mildenberg Collection, 1996, p. 128, fig. 194.
Janson, H. W. (ed.), New York,  pp. 357, fig. 451, plate 39.

The National Archaeological Museum of Naples, text by Stefano De Caro, Electa Napoli, 1996.
Janson, H. W. (ed.) Art of the Ancient World, Harry N. Abrams, Inc., New York.                                                                              Walker, A. S., editor, Animals in Ancient Art from the Leo Mildenberg Collection. Part III, Mainz am Rhein, 1996.        

Kozloff, A. P., editor, Mitten, D.G., Sguaitamatti, M., More Animals in Ancient Art from the Leo Mildenberg Collection, M., Mainz am Rhein, 1986.