Bronze antoninianus, 22mm, 3.69gm, issued AD 284-294 Cyzicus mint.
Obv: IMP C C VAL DIOCLETIANVS AVG, Radiate, draped bust right.
Rev: CONCORDIA MILITVM (XXI in ex.), Diocletian standing right receiving Victory from Jupiter standing left, holding sceptre, B between.
References: Sear 12635, RIC 306.
Cleaned.