The obverse legend of this coin is unusual as it says that Decentius is Fortissiumus (almighty)
I don't know what Decentius did to be "almighty" except be the brother of a powerful usurper, but it was apparently enough.
Decentius
A.D. 351
21x22mm 5.5gm
DN DECENTI-VS FORT CAES; bare-headed, draped and cuirassed bust right; A behind bust.
VICTORIAE DD NN AVG ET CAES; two Victories holding wreath inscribed with VOT V MVLT X.
In ex. TRP
RIC VIII Trier 316