Constantius II, AE follis, Siscia. 25mm, 5.58 g. AD 367-375. 

DN CONSTAN-TIVS PF AVG, pearl-diademed, draped, cuirassed bust right.
FEL TEMP-REPARATIO, Emperor in military dress standing on galley moving left, holding phoenix on globe and labarum. Victory sitting at the stern, steering the ship.

Mintmark Gamma SIS [SYM3]R. (symbol 3 resembles an h)

RIC VIII Siscia 202.
Rated rare.

With permission of Numismatik Naumann auction 76, Lot 563, April 2019.