Roman Imperial
Diocletian (AD 284-305) Siscia
AE Antoninianus (22.1mm, 3.8g)
Obv: IMP C C VAL DIOCLETIANVS AVG, radiate, draped and cuirassed bust right.
Rev: CONCORDIA MILITVM, Emperor standing right, holding short sceptre, receiving Victory from Jupiter, standing left, holding vertical sceptre, E between figures, XXI in exergue.
RIC 306.