City Commemorative. Rome. AE follis. AD 337-340. 14mm, 1.79 g.

CONSTANTINOPOLIS (no legend break), laureate and helmeted bust of Constantinople left, wearing imperial mantle and necklace, and holding sceptre.
VICTO-RIA AVG, Victory standing front, looking left, foot on prow, holding wreath and palm branch. 

Mintmark R star Epsilon. 

RIC VIII Rome 31.

With permission of cngcoins.com, auction 345, Lot 524, Feb 2015.