Probus Antoninianus, struck AD 276-282 at Siscia mint.
Obv: IMP PROBVS INV AVG, radiate, draped and cuirassed bust right.
Rev: CONCORD MILIT / XXI (in exergue), Probus and Concordia standing facing one another, clasping hands; A between.
3,38 g, 21 mm.
RIC 657.