Domitian as Caesar, silver denarius, 79 AD, Rome mint.
Obverse- CAESAR AVG F DOMITIANVS COS VI, Laureate head right.
Reverse- PRINCEPS-IVV_ENTVTIS, Vesta seated left, palladium in right hand, scepter in left.
RIC II, 244 (Vespasian), 17mm x 18mm, 2.78g.
This coin was minted the same year Mt. Vesuvius erupted and buried Pompeii.