Dupondius - Nero SECVRITAS AVGVSTI S C, Securitas

The SECVRITAS AVGVSTI type appeared during a period when Nero's government was actively projecting stability — the years following the death of Burrus and the dismissal of Seneca left the emperor without his most capable advisors, and the propaganda of security was partly compensatory. Securitas as a coin type was relatively new to Roman imperial iconography, and Nero deployed it with unusual frequency across his bronze issues.

RIC 518 belongs to the reorganized coinage of 64 AD, when Nero reduced the weight standards for both the as and dupondius — a debasement that effectively stretched the treasury's bronze supply during the costly rebuilding of Rome after the great fire.