Nummus - Constantinus I CONSTANTINOPOLIS, Cyzicus

The CONSTANTINOPOLIS issue was struck to commemorate the formal dedication of Constantinople in 330 AD, a city Constantine had been building since 324 on the site of the Greek colony Byzantium. Cyzicus, situated on the Propontis roughly 100 kilometers from the new capital, was one of several mints tasked with producing this commemorative type in volume. The series ran across nearly every active mint in the eastern and western empire simultaneously — a coordinated propaganda effort of unusual geographic scope.

RIC VII Cyzicus 92 falls within the later production window of this type, when output at Cyzicus was already declining ahead of broader mint reorganizations later in the decade.