Domitian, as Caesar under Titus, AE As, 26 mm, 10 g, AD 80-81. 

CAES DIVI VESP F DOMITIANVS COS VII, laureate head right.
S-C across fields, Minerva standing left, holding thunderbolt in her right hand and spear in her left. 

RIC (titus) 345; BMCRE 244-245; Paris 254. 

With permission of cngcoins.com, auction 324, Lot 373, April 2014.