Dupondius - Trajan S P Q R OPTIMO PRINCIPI S C AQVA TRAIANA

The Aqua Traiana was completed around 109 AD, bringing water from Lake Sabbatino northwest of Rome across roughly 32 kilometers to supply the Janiculum hill and Trastevere — districts chronically underserved by the older Republican-era aqueducts. Trajan's decision to commemorate the project on bronze coinage aimed at everyday circulation was deliberate; this was infrastructure as politics, addressed to the plebs who actually benefited from the new supply.

RIC II 464 is among several aqueduct types issued within this window, distinguishable by reverse legend arrangement and die axis.