Rare issue minted at the Trier mint.
Roman Imperial
Constantine I the Great (308-337), Follis 330-331, Trier mint
Obverse: laureate and helmeted bust of Constantinopolis left, wearing imperial mantle, scepter over shoulder
CONSTANTINOPOLIS
Reverse: Victory standing left, right foot on prow, holding scepter and shield, TRS in exerque
Diameter 16 mm, weight 1.05 g