Constantine II AE follis of Antioch. AD 316-337. 14 mm, 1.78 g. 

CONSTAN-TINVS AVG, pearl-diademed, draped, cuirassed bust right.
GLOR-IA EXERC-ITVS, two soldiers holding spears and 
shields with one standard (O on banner) between them.

Dot to left and right of top of banner.
Mintmark SMANS. 

RIC VIII Antioch 51, rated common.

Known officina marks: 
A, B, Delta, epsilon, S, H, theta, I, AI, BI, Gamma I, Delta I.

With permission of Savoca Numismatik Blue Auction 7, lot 1583, May 2018.