Ancient Roman silver denarius of empress Crispina / Joy

This is an ancient Roman silver denarius, of empress Crispina, minted in Rome between 178 - 191AD 

Obverse: CRISPINA AVGVSTA, "Empress Crispina" draped bust right

Reverse: HILARITAS, "Gaiety or Joy personified" Hilaritas standing left, holding long palm & cornucopia.

CULTURE: ROMAN

DENOMINATION: Denarius

MATERIAL: Silver

DATE: 178 - 191 AD (this coin minted between 178 - 191AD)

SIZE: 16mm dia

WEIGHT: 2.73 grams

ATTRIBUTION:  RIC III/282; S-6000; Cohen 21

PROVENANCE: Private collection. Bremen, Germany.