here is a nice example of this type from Vetranio; but maybe a little pricey at $350
Vetranio
A.D. 350
DN VETRANIO P F AVG, laureate, draped and cuirassed bust right.
GLORIA ROMANORVM, Emperor, bare-headed and in military dress, stg. facing, head l., holding standard with Chi-Rho on the banner, and spear.
In ex. ΓSIS
RIC VIII Siscia 294
