Maiorina - Julian SECVRITAS REI PVB, Heraclea

Julian's brief reign saw a deliberate revival of larger bronze coinage after decades of debased small nummi — the maiorina format was consciously resurrected as part of his broader program of pagan religious and administrative restoration. The Heraclea mint, one of the more productive Balkan facilities, struck this type across Julian's reign from his proclamation as Augustus through his death on campaign against the Sassanids in June 363.

RIC VIII 103 for Heraclea places this among the issues produced during that compressed window of roughly twenty months.