The Pentelic marble relief consists of two plates and there must have been a third piece on the left hand side, containing at least the tail of the horse.
Its left foreleg is raised and bent, the right is stretched out and planted firmly in the ground.
His hair is cut short, but the pattern of the locks indicates that he is an exotic foreigner.
Arabs and Africans were depicted in Greek art from the fourth century BC.
If one takes the earlier dating it is assumed that the relief belonged to a large grave naiskos; supporters of the later dating often connect it with the funerary monument of King Mithridates VI Eupator of Pontus.