Constantinus I. Follis, struck AD 336-337 at Trier mint.
Obv: CONSTANTINOPOLIS, helmeted, laureate and mantled bust left holding scepter across shoulder.
Rev: TR•P (in exergue), Victory standing left, right foot on prow, scepter in right, resting left on grounded shield.
2,31 g, 17 mm.
RIC 543