Armoured statue of Emperor Trajan, a huge statue (2,40 m.) from Perge, 2nd and 3rd century AD

At some point I got more interested in the cuirasses as such than the heads and bodies of the emperors (sometimes the heads were changed for that of the next one, the suit would remain).

As a matter of fact the book I quote from explains how heads were changed also because of changing fashion. The head of this statue - dating from the 2nd century - was recarved to make the emperor fit the 3rd century taste: they grew him a beard and made other changes such as having his forehead get wrinkles. This was not unusual before, but became more common during the end of the 3rd century.

Source: Sculptures of the Museum in Antalya p. 144