Roman Imperial
Constantine I 'the Great' (307/310-337 AD). Thessalonica
AE Follis (18.2mm 2.72g)
Obv: CONSTANTINVS AVG, laureate head to right
Rev: PROVIDENTIAE AVGG, camp gate with no doors, two turrets, star above, pellet in right field; SMTSA in exergue.
RIC VII 153