Quinarius - Trajan COS V P P S P Q R OPTIMO PRINC, Victory

The quinarius was by Trajan's reign already an anachronism — a half-denarius denomination that had drifted in and out of regular production for centuries, revived periodically for specific purposes rather than general circulation. Trajan's issues of this type are thought to have served donative or ceremonial functions, possibly distributed during triumphal occasions following the Dacian wars. The small flans and relatively low surviving numbers support a limited, purposeful release rather than broad monetary use.