Gratian, AV solidus, Trier.

DN GRATIANVS PF AVG, rosette-diademed, draped, cuirassed bust right.
VICTORIA AVGG, Gratian and Valens seated acing, holding globe
between them. Behind and between them Victory standing with
wings spread above their heads, palm branch upright on ground
between them.
Mintmark TR dot OB dot.

RIC IX Trier 17g, mintmark type 2.