CALIGULA, A.D. 37-41. AR Denarius (3.77 gms), Rome Mint, ca. A.D. 37-38.RIC-14. "C CAESAR AVG GERM P M TR POT", Laureate head of Caligula right; Reverse: "AGRIPPINA MAT C CAES AVG GERM", draped bust of Agrippina I right hair falling in plait down back of neck. Hard metal surfaces and crisp strike details. Nicely centered and an exceptional example of this difficult type.NGC Ch EF, Strike: 5/5 Surface: 4/5.