Roman Imperial
Diocletian (284-305 AD) Antioch
AE Antoninianus (21mm, 2.9g)
Obv: IMP C C VAL DIOCLETIANVS AVG. Radiate, draped and cuirassed bust right.
Rev: CONCORDIA MILITVM / Γ / XXI. Diocletian standing right, holding sceptre and receiving victoriola from Jupiter standing left, holding sceptre.
RIC 306.