Nero Brass Sestertius: RIC I (second edition) Nero 143

Monetary Context and the Neronian Aes Reform

The production of the sestertius RIC I (second edition) Nero 143 was enabled by the profound structural overhaul of Roman imperial coinage undertaken by Nero around 64 AD. During the first decade of his principate, between 54 and 63 AD, the imperial authorities had largely suspended the striking of base-metal denominations at Rome, confining output almost entirely to gold aurei and silver denarii. When copper-alloy production resumed at the capital, it was organized on an unprecedented scale and incorporated rigorous technical and artistic standards. The reform lowered the weights of the gold and silver denominations while revitalizing the aes system through the extensive use of orichalcum, a golden-toned brass alloy composed of copper and zinc. In the traditional Augustan denomination scheme, the sestertius and dupondius were struck in orichalcum, whereas the smaller as, semis, and quadrans were produced in unalloyed red copper. Under Nero's initial post-reform experimentation, orichalcum was briefly applied across all denominations, though the standard division was soon re-established. The sestertius remained the premier prestige coin of everyday commerce, worth four asses or one quarter of a silver denarius. Because of its generous diameter and substantial flan weight, typically averaging between 26 and 29 grams, the sestertius functioned as the primary visual vehicle for dynastic, military, and civic propaganda intended to circulate broadly among the senatorial, equestrian, and plebeian populations of Rome and the Italian peninsula.

Mint Attribution and Production Techniques

Numismatic scholarship securely attributes RIC I (second edition) Nero 143 to the principal imperial mint at Rome. This attribution is supported by stylistic consistency, metallurgical composition, and the specific epigraphic and bust conventions of the capital. Throughout Nero's post-reform aes issues, coins produced at the mint of Rome are distinguished from contemporary issues struck at the secondary western mint of Lugdunum (modern Lyon, France) by several consistent markers. At Rome, imperial portraits typically display an aegis draped on the truncation of the neck or appear bare-headed or laureate without additional terminal punctuation, whereas Lugdunum sestertii predominantly feature a small globe or globe-and-rudder beneath the point of the neck truncation. The dies for RIC 143 were cut by master engravers working at the height of Julio-Claudian realistic portraiture. The orichalcum flans were cast in open or two-part molds and struck hot between heavy hand-carved iron or bronze dies. The high relief of the obverse portrait and the multi-planar architectural detail of the reverse demanded enormous striking force, often achieved using heavy sledgehammers wielded by skilled mint teams. Die alignment was maintained relatively consistently around the six-o'clock or twelve-o'clock axis, though slight variations are common across surviving specimens. The vibrant golden hue of the freshly minted orichalcum alloy was deliberately exploited to enhance the visual clarity of the delicate architectural reliefs.

Obverse Iconography and Imperial Portraiture

The obverse of RIC I (second edition) Nero 143 presents an authoritative right-facing portrait of Nero, depicted mature, heavy-jowled, and wearing a laurel wreath tied behind the head with ribbon ties trailing down the nape of the neck. Across the lower edge of the neck truncation rests an aegis, the protective goatskin mantle traditionally associated with Zeus, Athena, and Roman rulers claiming divine favor and martial invulnerability. The rendering of the hair is elaborate and deeply sculpted, showcasing the distinctive stepped tiers and carefully curled locks that Nero adopted in conscious emulation of Hellenistic monarchs and professional performers. The heavy facial features, characterized by a fleshy throat, pronounced chin, straight nose, and thick lips, reflect the unidealized verism of Nero's mature coinage after 64 AD, departing from the youthful, delicate imagery of his earliest regnal years under the tutelage of Seneca and Burrus. The presence of the aegis serves a precise ideological purpose, casting the Princeps in heroic terms as the divine protector of the Roman state while complementing the martial theme of the triumphal arch showcased on the reverse.

Reverse Architectural Program: The Triumphal Arch

The reverse design of RIC I (second edition) Nero 143 features a celebrated representation of a single-bay triumphal arch viewed obliquely to display both the decorated facade and the left lateral profile. The arch is elevated on a low podium and crowned by an elaborate statuary group showing the emperor Nero standing in a facing four-horse chariot (quadriga), accompanied by a winged Victory holding a palm branch or wreath. Below the summit group, the architecture is enriched with intricate sculptural elements. On the left front corner stands a colossal statue of Pax holding a cornucopiae and olive branch, while on the right front corner stands Mars in full military attire, equipped with helmet, spear, and shield. The lateral bay and piers are decorated with figurative relief panels representing scenes of Roman soldiers and captive enemies, flanked by Corinthian columns and deeply cut molding. Within the bay, a floral or textile swag hangs across the opening. In the fields to the left and right of the arch appears the senatorial formula S C. This design depicts the monument decreed to Nero by the Senate to commemorate the Parthian peace negotiated by Gnaeus Domitius Corbulo, which culminated in the settlement of the Armenian throne under Tiridates I. Although the actual physical structure, traditionally located on the Capitoline Hill, has left no unambiguous archaeological trace in modern Rome, the reverse die of RIC 143 provides one of antiquity's most complete records of first-century Roman commemorative architecture.

Epigraphic Analysis and Legend Formulations

The inscriptions on RIC I (second edition) Nero 143 adhere to the standardized epigraphic program developed at the mint of Rome during the monetary reform. The obverse legend reads continuously around the periphery from the lower left: NERO CLAVD CAESAR AVG GER P M TR P IMP P P. This text translates the emperor's complete formal titulature: Nero Claudius Caesar Augustus Germanicus, Pontifex Maximus (High Priest), Tribunicia Potestate (invested with tribunician power), Imperator (supreme commander), and Pater Patriae (Father of the Country). The placement of imperial titles on the obverse emphasizes Nero's legitimacy and civil primacy, utilizing elegant, classical Roman serifed capitals. On the reverse, the inscription is deliberately minimal, consisting solely of the large abbreviation S C placed across the field, with S to the left and C to the right of the triumphal arch. This formula abbreviates Senatus Consulto ('by decree of the Senate'), marking the constitutional sanction by which the Senate formally authorized the striking of base-metal coinages at Rome. Unlike later issues that occasionally include geographical or historical captions, RIC 143 allows the visual architectural imagery to speak directly to the viewer, relying on the public's immediate familiarity with the Capitoline monument.

Typology, Die Variations, and Chronological Placement

Within the cataloguing structure of The Roman Imperial Coinage, RIC 143 represents an explicit typological combination: an obverse showing Nero's laureate head facing right with an aegis on the neck, paired with the triumphal arch reverse bearing the flanking S C field legend. The broader triumphal arch series encompassed several closely related variants produced during the mid-60s AD. Typological counterparts feature the head facing left (such as RIC 144), portraits without the aegis, variations in legend length, or reverse variations where the transverse garland within the central arch is omitted. The type also has parallel strikings at the mint of Lugdunum (such as RIC 392 and 393), which are readily differentiated by the characteristic globe beneath the neck truncation. While the broad catalogue date range for Nero's post-reform aes extends from 62 to 68 AD, detailed die studies and historical considerations place the intense production of the arch sestertii between approximately 64 and 65 AD, closely coinciding with the arrival of news regarding the diplomatic triumph in the East and the public dedication of the Capitoline monument prior to Tiridates' formal visit to Rome in 66 AD.

Circulation Patterns, Survival, and Numismatic Legacy

The sestertius RIC I (second edition) Nero 143 circulated widely across the central and western territories of the Roman Empire. Archaeological excavation finds and coin hoards demonstrate that Neronian orichalcum sestertii remained active in commercial circulation for decades after Nero's fall in 68 AD, despite damnatio memoriae measures enacted against his memory. Because of their sound metallic value and heavy module, sestertii of this family continued to pass through hands under the Flavian emperors, Trajan, and Hadrian, frequently displaying significant edge wear, smoothing, and occasional countermarks applied during regional currency revalidations. In the western provinces, including Gaul, Germania, and Britannia, specimens were often imported via military supply routes to pay legionaries and finance public construction. As worn pieces were gradually reclaimed and melted down during the Antonine and Severan currency devaluations, the survival of well-preserved specimens became uncommon. Today, RIC 143 is recognized among numismatists and architectural historians as an invaluable primary document, preserving the physical form of an otherwise lost triumphal monument and embodying the highest artistic achievement of Julio-Claudian monumental bronze coinage.

References

1. The Arch of Nero in Rome: A Study of the Roman Honorary Arch before the Reign of Trajan. pages 60-75
2. The Western Coinages of Nero (Numismatic Notes and Monographs 161). pages 120-135
3. Coins of the Roman Empire in the British Museum, Volume I: Augustus to Vitellius. pages 211-215
4. Online Coins of the Roman Empire: RIC I (second edition) Nero 143. ric.1(2).ner.143
5. The Roman Imperial Coinage, Volume I: From 31 BC to AD 69 (Revised Edition). pages 150-160