This one is has a nicely engraved obverse, but the reverse was not so skillfully done and they abbreviated the reverse legend.
Constantine I
Circa A.D. 330- 335
15mm 1.6gm
CONSTANTI-NVS MAX AVG, rosette-diademed, draped and cuirassed bust.
GLOR EXER CIT, Two soldiers helmeted, stg. facing one another, reversed spear in outer hands, inner hands on shields resting on the ground; between them two standards.
In exergue TRP
cf. RIC VII Trier 518