Balbinus Orichalcum Sestertius

Monetary and Political Context

The sestertii of Balbinus were produced during the dramatic political crisis of AD 238, frequently termed the Year of the Six Emperors. Following the sudden death of Gordian I and Gordian II in Africa, the Roman Senate took the unprecedented step of electing two equal Augusti from their own ranks: Balbinus, an aristocratic administrator of venerable patrician stock, and Pupienus, a stern military commander. To mollify the Roman populace and the Praetorian Guard, the young grandson of Gordian I, Gordian III, was created Caesar. The joint regime immediately required monetary legitimacy and vast cash reserves to pay the imperial donatives, maintain civic order in Rome, and finance Pupienus's expedition north to confront Maximinus Thrax at Aquileia. Within the traditional tripartite imperial monetary system, the sestertius remained the premier civic coin and the flagship of state bronze production. While precious metal billon antoniniani and denarii handled military disbursements and interstate debts, sestertii circulated actively among urban merchants and citizens. Their broad surfaces functioned as prime instruments of senatorial propaganda, advertising constitutional continuity, divine favour, and administrative partnership in a period marked by intense civil anxiety.

Production Standards and Mint Organization

All imperial sestertii bearing the name of Balbinus were produced exclusively at the central mint of Rome. Operating under intense pressure to emit vast volumes of currency within a span of roughly three months between April and July AD 238, the Rome mint organized production across distinct officinae that divided output evenly between Balbinus and Pupienus. The sestertii were struck from orichalcum, a copper-zinc alloy known for its vibrant brass-golden appearance when freshly minted. In terms of metrology, the sestertius under Balbinus maintained the reduced weight standard characteristic of the late Severan era and the reign of Maximinus Thrax. While individual specimens fluctuate due to rapid blank preparation and al-marco casting techniques, the median weight clustered between nineteen and twenty-three grams, with module diameters spanning twenty-eight to thirty-two millimetres. The die cutters at Rome achieved exceptional artistic quality, executing deeply carved dies with crisp lettering and dignified realism despite the compressed production timeline.

Obverse Portraiture and Style

The obverse of the sestertius consistently features a right-facing bust of Balbinus, draped and cuirassed or draped alone, wearing the imperial laurel wreath. In Roman numismatic convention, the laurel wreath specifically designated the sestertius and as, distinguishing them from double denominations like the radiate dupondius or double sestertius. Die engravers rendered Balbinus with a distinctive, fleshy physiognomy characterized by a full, rounded jaw, jowled cheeks, a close-cropped military beard, and deeply lined features indicating an elder statesman. This naturalistic style consciously reflected the veristic portrait tradition favoured by the senatorial elite, contrasting sharply with the severe, block-like heroic portraiture of Maximinus Thrax. The care given to the facial modeling conveyed an aura of senatorial maturity, gravitas, and civic benevolence, assuring the Roman public that mature constitutional governance had been restored to the principate.

Reverse Iconography and Symbolism

The reverse types of Balbinus sestertii were selected to reinforce political messaging and all carry the standard senatorial authorization mark S C (Senatus Consulto). The most prominent reverse designs include Concordia, depicted seated left holding a patera and double cornucopiae, personifying the vital harmony required between the two equal emperors. Another widespread type features Fides Publica standing left, holding a patera and cornucopiae, stressing mutual fidelity between the Senate, the emperors, and the citizenry. Providentia Deorum shows Providentia standing left holding a baton over a globe at her feet and a cornucopiae, crediting the sudden political elevation of the co-emperors to divine foresight. The Liberalitas type depicts the personification holding an abacus or tessera and cornucopiae, commemorating the imperial cash distributions made to the Roman populace upon their accession. Additional types depict Balbinus as pontifex or triumphator with branch and parazonium, or invoke IOVI CONSERVATORI, placing the senatorial regime under the direct protection of Jupiter.

Epigraphy and Inscriptional Themes

The epigraphy of the series is executed in neat, tall classical capitals typical of the Rome mint in the early third century. The obverse legend is virtually uniform across the sestertius emission: IMP CAES D CAEL BALBINVS AVG, translating as Imperator Caesar Decimus Caelius Balbinus Augustus. The inclusion of his personal praenomen and gentilicium emphasized his authentic patrician lineage. On the reverse, the legends are concise and ideological. The reverse inscription CONCORDIA AVGG, using the double G in AVGG, grammatically declares that the Concordia applies to the two Augusti ruling jointly. Similarly, LIBERALITAS AVGVSTORVM acknowledges the joint benefaction of the two rulers. Inscriptions such as PROVIDENTIA DEORVM S C and FIDES PVBLICA S C place emphasis on abstract imperial virtues rather than military conquest, reflecting the civilian priorities of the senatorial government. Chronological titles such as P M TR P COS II P P appear on select civic types, recording Balbinus's position as Pontifex Maximus, his holding of tribunician power, his second consulship, and the title Pater Patriae.

Typology and Chronological Sequence

Because the joint reign lasted only about ninety-nine days from late April to late July AD 238, the typology of Balbinus's sestertii is tightly compressed. Numismatists divide the bronze coinage into two closely spaced phases. The initial phase focused on urgent accession themes: the proclamation of Concordia, the invocation of Providentia, and the distribution of the primary congiarium celebrated by Liberalitas Augustorum. The second phase, initiated as news arrived of Maximinus Thrax's murder by his own soldiers outside Aquileia, introduced types emphasizing public faith (Fides Publica) and divine conservation (Iovi Conservatori). Die-link studies demonstrate that obverse dies were frequently shared across multiple reverse types within the same officina, reflecting rapid die turnover and intensive coining activity. The emission abruptly ceased in late July AD 238 when the Praetorian Guard, resentful of senatorial oversight, stormed the imperial palace on the Palatine Hill and murdered both Balbinus and Pupienus, clearing the path for the sole reign of Gordian III.

Circulation Patterns and Archaeological Record

Despite the brief duration of the issue, sestertii of Balbinus were produced in substantial numbers and entered wide circulation throughout the western Roman Empire. Hoard evidence from Italy, Gaul, Britain, and the Danubian limes reveals that these coins circulated alongside worn sestertii from the Antonine and Severan eras. Because bronze denominations possessed a fiduciary value that did not closely tie to metal intrinsic costs in the way silver denarii did, sestertii remained in active circulation for decades. By the AD 250s and 260s, galloping inflation under Valerian and Gallienus severely reduced the production of copper-alloy coinage, causing existing sestertii like those of Balbinus to suffer heavy wear, clipping, or eventual deposition in domestic savings hoards. Recovered specimens often display smooth surfaces, edge knocks, and rich natural patinas ranging from deep olive-green to dark brown, testifying to extensive transactional use before their eventual burial.

References

1. I Grandi Bronzi Imperiali: Pupieno, Balbino, Gordiano Pio. Vol. IV, Part 1, pages 41-65
2. Coins of the Roman Empire in the British Museum, Vol. VI: Severus Alexander to Balbinus and Pupienus. pages 249-256
3. The Roman Imperial Coinage, Vol. IV, Part II: Macrinus to Pupienus. pages 169-172, nos. 9-25
4. Roman Coins and Their Values, Volume II: The Accession of Nerva to the Death of Caracalla / The Third Century Crisis. pages 515-517, nos. 8490-8504