Solidus - Constantius II GLORIA REIPVBLICAE, Nicomedia

Nicomedia served as one of the principal mints of the eastern empire throughout Constantius II's long sole reign, and the GLORIA REIPVBLICAE solidi struck there fall within a period of sustained dynastic violence — the 340s opened with Constans defeating and killing their brother Constantine II at Aquileia, leaving just two Augusti to divide the empire. Constantius spent much of this decade simultaneously managing the Persian frontier under Shapur II and consolidating political control over an administration still reorganizing after Constantine the Great's death in 337.

RIC VIII #33 places this type firmly within the Nicomedian sequence established under the reformed late Roman coinage system, where mint-mark officina letters allow attribution to specific workshop teams.