Coin depicted roughly twice actual size*

AE19 of Constantine I

Bronze AE19, 19mm, 2.22gm, issued AD 330-333 Siscia mint.

Obv: VRBS ROMA, Bust of Roma, helmeted, wearing imperial cloak, left.

Rev: She-wolf, standing left, suckling twins; above, two stars.

References: Sear 16513, RIC 222.