Caligula - Augustus 37-41 AD - AE AS Ch VF C CAESAR AVG GERMANICVS PON M TR POT Bare head left VESTA Vesta seated left, holding patera and scepter. There is extremely nice and sharp image of galley with paddlers behind Vestas head. Weight: 9.91 gr Diameter: 28 mm Caligula, formally known as Gaius, was the third Roman emperor, ruling from 37 to 41. The son of the popular Roman general Germanicus and Augustus's granddaughter Agrippina the Elder, Caligula was born into the first ruling family of the Roman Empire, conventionally known as the Julio-Claudian dynasty.