Coin depicted roughly twice actual size*

AE18 of Constantine I

Bronze AE18, 18mm, 2.55gm, issued AD 330-333. Heraclea mint.

Obv: VRBA ROMA, Helmeted bust of Roma left wearing imperial robes.

Rev: She-wold suckling twins, two stars above.

References: Sear 16517, RIC 114.