Both pieces are very formal representations of the "statua togata" (statue in a toga) type depicting Roman civil servants. In the time of the Roman Empire; when a change in central or local authorities occurred; it was common to replace only statues' heads for money saving purposes. This mostly took place when a new Emperor came to power; above all in times of state crisis; when power shifts were frequent. Thus the much earlier statue no. 143402 (to the left side from the stairs) was equipped with the head of the Roman Emperor Probus (268–282 AD); while the statue no. 143403 has a head of an unknown civil servant dated to 290–310 BC.