As - Drusus Caesar IMP D CAES DIVI VESP F AVG REST

This is a "restitution" issue — a coin struck not under Drusus but in his memory, nearly fifty years after his death in 23 AD. Titus issued these pieces, restoring honors to figures from the Julio-Claudian dynasty as a deliberate act of dynastic legitimacy-building for the new Flavian house. Drusus, son of Tiberius and once the presumed heir to the principate, died under circumstances suspicious enough that Sejanus was later accused of poisoning him — an accusation made only after Sejanus himself fell from power in 31 AD.