Caligula's real name was Gaius Caesar but earned the nickname with which he is known by from the type of army boots he wore during childhood. One of the most enigmatic Roman emperors, the early part of his career had him start out as an ordinary and modest man. His granduncle Tiberius had wished Caligula along with Gemellus (Caligula's cousin) to be joint emperors. Instead, Caligula adopted him but never gave him any official role. At some point Caligula underwent a transformation, supposedly after an illness, that transformed him into a maniacal and cruel person. As seen on the erotic movie of the same name, Caligula would take joy in perverse and sadistic acts that often ended in the murder of innocent people. He also made no subtleties for his hatred of the Senate, the members of which were objects of his ridicule (or worse). It was only a matter of time before a conspiracy was hatched and he was murdered.
RIC 1, Cohen 10 Aureus Obv: CCAESARAVGGERMPMTRPOTCOS, bare head right
Rev: No legend, radiate head of Divus Augustus right, between two stars. Lot sold for $12,000 4/1/01.
RIC 2, RSC 11 AR Denarius Obv: CCAESARAVGGERMPMTRPOTCOS, bare head right
Rev: No legend, radiate head of Divus Augustus right, between two stars. Lot sold for $1,550 4/1/01.
RIC 33 Sestertius Obv: CCAESARAVGGERMANICVSPONMTRPOT; Laureate head left.
Rev: AGRIPPINADRVSILLAIVLIA; Three sisters of Caligula as goddesses, SC in exergue. Lot sold for $15,000 1/16/02.
RIC 56 (Augustus) Dupondius, Augustus Commemorative Obv: DIVVSAVGVSTVS; radite head left.
Rev: CONSENSVSENATETEQORDINPQR; Laureate and togate statue of Gaius Caligula seated left on curule chair, holding branch in right hand, left hand at side.
RIC 35 As, Germanicus Commemorative Obv: GERMANICVSCAESARTIAVGVSTFDIVIAVGN, bare head of Germanicus left.
Rev: CCAESARAVGGERMANICVSPONMTRPOT, legend around large S C.