Caligula

Gaius Caesar Augustus Germanicus

Reign 37 AD – 41 AD
Dynasty Julio-Claudian
Born 12 AD
Died 41 AD

Gaius, nicknamed Caligula ('Little Boot') from his childhood in military camps, began his reign with popular reforms but rapidly descended into erratic and tyrannical behavior. Ancient sources describe extravagant building projects, claims of divinity, and arbitrary cruelty, though some accounts may be exaggerated.

Caligula's brief reign exposed the vulnerability of the Principate to a ruler unchecked by Republican norms. His coinage, though produced for only four years, is among the most sought-after of all imperial series due to its rarity and dramatic historical context.

Key Events

37 AD Accession after the death of Tiberius; initial period of popular reforms
38 AD Serious illness, after which sources report a dramatic change in behavior
39 AD Abortive campaign to the Rhine frontier
40 AD March to the English Channel; ordered soldiers to collect seashells as 'spoils of the sea'
41 AD Assassinated by Praetorian Guard officers led by Cassius Chaerea

Coinage

Caligula's coinage is scarce and highly valued by collectors. His issues frequently honor his family, particularly his parents Germanicus and Agrippina Senior, and his three sisters. The sestertii depicting his sisters as personifications of Securitas, Concordia, and Fortuna are among the most famous Roman coins.

Denominations

Aureus Denarius Sestertius Dupondius As Quadrans

Notable Types

  • Three Sisters sestertius
  • Germanicus and Agrippina commemoratives
  • ADLOCVT COH sestertius showing address to troops

Common Reverses

AGRIPPINA DRVSILLA IVLIA ADLOCVT COH VESTA PIETAS C CAESAR DIVI AVG PRON AVG

Active Mints

Rome

Further Reading

  • The Twelve Caesars — Suetonius (trans. Robert Graves)
  • Roman Coins and Their Values, Volume I — David R. Sear