Decentius, AE3 of Trier.

DN DECENTI-VS FORT CAES, bare-headed, draped, cuirassed bust right.
VICTORIAE DD NN AVG ET CAES, two Victories standing 
facing each other, holding between them a shield 
inscribed VOT-V-MVLT-X.

Mintmark TRP.
RIC VIII Trier 313.
Rare.