Gratian	AE3 of Alexandria. AD 378-383. 17 mm, 2.45 g.

DN GRATIA-NVS PF AVG, pearl diademed, draped, cuirassed bust right.
CONCOR-DIA AVGGG, Roma, helmeted, seating facing, looking left, right leg bare, holding globe and spear, its lower part hidden by her robe.

O or Theta in right field.
Mintmark ALEA.

RIC IX Alexandria 9a var (field mark).
Rare. 

With permission of VAuctions auction 322, Lot 450m Dec. 2016.