Domitian Denarius. 90-91 AD. 

IMP CAES DOMIT AVG GERM P M TR P X, laureate head right.
IMP XXI COS XV CENS P P P, Minerva standing left with 
thunderbolt and spear, shield at foot. 

RIC 721; RSC 264.

With permission of H.D. Rauch GmbH, Sept. 2013.