Gaius (Caligula) ruled AD 37-41
AR denarius 3.8859 gm, 18.5 mm
Rome AD 37-38
1. Sutherland, C. H. V. 1984. The Roman Imperial Coinage: Volume 1. From 31 BC to AD 69. Page 109 #14. London: Spink and Son Ltd. 2. Mattingly, Harold. 1923. Coins of the Roman Empire in the British Museum: Volume 1. Augustus to Vitellius. Page 148 #15 and Plate 27 #12. London: Spink & Son Ltd.
Obverse
Gaius, laureate, facing right
C CAESAR AVG GERM P M TR POT
Reverse
Agrippina Major facing right
AGRIPPINA MAT C CAES AVG GERM