The Arch of Constantine as Mix of Different Arches

When we look at the arch of Constantine, which is located just outside of the Colosseum, we have an impression of unity and harmony of its sculptural program. However, things are not easy when we deal with this arch. First of all, we have to understand that this arch was first built by Hadrian in 130 AD to glorify his beloved Antinous ,who is represented in the roundels of the monuments. Secondly, if we get closer to the arch, there is a difference in stiye at the moment of analyzing the carved panels. In fact, the roundels of Hadrian are different from the rectangular frieze panels: the panels show Constantine battling in Verona against Licinius and the battle of the Milvian Bridge when he defeated Maxentius and became the only Roman Emperor ruling the empire. Indeed all the arch is a puzzle, because at the moment of adding therectangular panels, Constantine added the attic on top with the famous inscription for which scholars are still debating.Therefore, the arch is from the bottom until the beginning of the attic Hadrianic, but in the attic and in the rectangular panels is Late Antique because of the linearity of its carvings and for the frontal disposition of the figures.