Roman Empire Gaius Caligula, with Agrippina I, Emperor AD 37-41 RIC 13; Lyon 168; BN 22-3; BMC 14; Calicó 326; Biaggi 194, Mint State Lugdunum, AD 37/8. C CAESAR AVG GERM P M TR POT, laureate head of Gaius (Caligula) right. Reverse:…