Reign of Caligula thumb|right|upright=1.4|During the reign of Caligula, coins like the one pictured here were issued depicting his three sisters, Drusilla, Livilla, and Agrippina the Younger.
Reign of Caligula thumb|right|upright=1.4|During the reign of Caligula, coins like the one pictured here were issued depic,ting his three sisters Drusilla, Livilla, and Agrippina the Younger.