Gratian AE3. 378-383 AD. 

Obv: DN GRATIA-NVS PF AVG, rosette-diademed, draped & cuirassed bust right 
Rev: CONCOR-DIA AVGGG, Roma, helmeted, seated facing, 
holding globe and spear, the lower part of which is 
hidden by her robe, her right leg bare; 
Q in left field
F over K in right field
mintmark ANTA. 

RIC IX Antioch, 46b, rated scarce.