Domitian (81-96) AR Denarius (Silver, 18mm, 3,08g) Rome.
Obv: IMP CAES DOMIT AVG GERM P M TR P XI - Laureate head right.
Rev: IMP XXI COS XVI CENS P P P - Minerva standing left, holding spear and thunderbolt; shield behind to right.
References: RIC² 732