Solidus - Theodosius II SALVS REIPVBLICAE, Constantinopolis

Theodosius II came to the throne at age seven in 408 and ruled for over four decades under a succession of regents and powerful ministers — most notably his sister Pulcheria, who effectively governed the eastern court through much of the 420s. This issue falls squarely within that period, when the western throne was simultaneously occupied by Valentinian III, a child emperor installed in 425 with considerable eastern military backing. The solidus weight standard held firm throughout; Theodosius's mint administration was one of the more disciplined of the fifth century.