AE 2/3 (21mm) Struck 351-354ad Sirmium?

Obv: D N CONSTANTIVS NOB CAES Barehead, draped, and cuirassed bust right.

Rev: FEL TEMP REPARATIO Soldier spearing fallen horseman, horseman reaches towards soldier. Sin left field

RIC VIII 46 Sirmium? (uncertain attribution, SWAG!!)