Gaius (Caligula), with Germanicus. AD 37-41. AR Denarius (18mm, 3.56 g, 4h). Lugdunum (Lyon) mint. Struck 40 AD. C CAESAR AVG PON M TR POT III COS III, laureate head right / GERMANICVS CAES P C CAES AVG GERM, bare head of Germanicus right. RIC I 26; RSC 5. VF, lightly toned, porosity.