Roman Empire - Constantine II - bronze follis (3,45 g. 20 mm.). Rome mint.

CONSTANTINVS IVN NOB C. Laureate, draped bust right /

ROMAE AETERNAE. / P-R. Roma seated right on shield, inscribing shield X/V. R Q en exergue.
RIC.156 (R3) - C.171 (3f.)
Good fine, scarce coin, green original patina.