Domitian (81-96) AR Denarius (Silver, 3.47g, 19mm) Rome, 91.
Obv: IMP CAES DOMIT AVG GERM P M TR P XI, laureate head right
Rev: IMP XXI COS XVI CENS P P P, Minerva advancing right, with shield in left hand and spear held aloft in right.
Ref: RIC 724.