En la RIC Roma 371 parece solo te deja la posibilidad de una épsilon
City Commemorative. Rome. AE3. 335-6 d. C.
RIC VIII Rome 371 R2
CONSTANTI-NOPOLIS, laureate and helmeted bust of Constantinople left, wearing imperial cloak and holding sceptre
Victory standing left on prow, holding spear & resting hand on shield.
Mintmark R star Epsilon.