Constantine I AE follis of Antioch. AD 335.

CONSTANTINVS MAX AVG, rosette-diademed, draped and cuirassed bust right.
GLORIA EXERCITVS, two helmeted soldiers standing facing each other, each holding a spear and a shield at their sides, two standards between them. 

Mintmark SMANA. 

RIC VII Antioch 86.

With permission of Savoca Numismatik Auction 93 Silver, Lot 554, Jan, 2021.