Coin depicted roughly twice actual size*

AE3 of Constantine I

Bronze AE3, 18mm, 2.13gm, issued AD 326-328 Thessalonica mint.

Obv: CONSTANTINVS AVG, Laureate head right.

Rev: PROVIDENTIAE AVGG (SMTSΓ in ex.), Camp gate with two turrets, without doors, with varying number of stone layers; star above, dot to right.

References: Sear 16254, RIC 153.