Here is one struck by Vetranio in the name of Constantius II.
Constantius II
A.D. 350
24mm 4.4gm
DN CONSTANTIVS P F AVG, pearl-diademed, cuirassed and draped bust right. A behind bust.
HOC SIGNO VICTOR ERIS, [In this sign you will be the victor] emperor standing left with labarum inscribed with Chi-Rho, being crowned by Victory. III in left field.
In ex. gammaSIS crescent
RIC VIII Siscia 304