Nero Dupondius, RIC I (second edition) Nero 184

Monetary Reform and Denominational Context

Around AD 64, Emperor Nero initiated a sweeping restructuring of the Roman monetary system that affected all metals from gold to base copper alloys. In the aes coinage, Nero overhauled the traditional relationship between metallic content and face value. Under the Augustan system, the dupondius was struck in orichalcum, a golden-hued brass alloy of copper and zinc, weighing approximately half an ounce, while the as was struck in reddish, pure copper of similar weight. Over decades of circulation, patination and wear often blurred the visual distinction between yellow brass and red copper, causing confusion in daily marketplace transactions. During the monetary changes of AD 64, Nero experimented briefly with striking all fractional denominations from the sestertius down to the quadrans or even semis in orichalcum, before establishing standardized visual markers. For the dupondius, two crucial diagnostic devices were introduced: the radiate crown on the imperial portrait and the numeral mark of value II placed on the reverse. RIC I (second edition) Nero 184 belongs to this reform period, representing the dupondius in its most formally explicit numismatic presentation, where metallic composition, iconographic attribute, and numerical designation converged to ensure unequivocal identification in the Roman marketplace.

Mint Organization and Production Techniques

RIC I (second edition) Nero 184 was struck exclusively at the imperial mint in Rome. Base-metal coinage under Nero was produced both at the primary urban mint of Rome and at a major branch facility in Lugdunum. However, the specific die pairing and mark-of-value series featuring the Macellum Magnum with the mark II in the reverse exergue were confined to the capital. The production process involved casting flans of orichalcum with an average target weight hovering around 12.5 to 15.0 grams, although significant weight variations were routine in Roman base-metal manufacture where pieces circulated by tale rather than by strict individual weight. The flans were struck between engraved bronze or iron dies using heavy manual hammers. The engraving of the Rome mint during this phase is celebrated for its exceptional naturalism, plastic modeling, and elaborate spatial perspective. Surviving specimens demonstrate careful alignment and dynamic relief, characteristic of the skilled die-cutters active in Rome after the great fire of AD 64. The alloy composition relied on cementation brass, where metallic copper was heated with zinc oxide ores, resulting in an attractive golden surface when fresh, which further accentuated the finely delineated architectural elements of the reverse.

Obverse Design and Imperial Iconography

The obverse of RIC I (second edition) Nero 184 presents the head of Nero facing right, wearing a prominent radiate crown. This portrait reflects the mature iconographic style developed during the latter half of his principate. Moving away from the idealized, youthful depictions of the late AD 50s, the die-engravers portrayed the emperor with a thick, heavy neck, a fleshy jawline, and elaborate, carefully arranged tiers of hair curling down the nape of the neck, often described as the coma in gradus formata. The radiate crown serves a dual purpose. Iconographically, it invokes the radiant solar aura of Apollo and Sol, deities with whom Nero closely identified his artistic and athletic pursuits. Functionally, within the reform scheme of base-metal denominations, the radiate crown functioned as the official numismatic signifier of a double unit, identifying the coin as a dupondius worth two asses, in sharp contrast to the laureate or bare-headed portrait reserved for the single as. The execution of the obverse die exhibits the fluid, three-dimensional realism that characterizes the high artistic apex of Neronian Rome.

Reverse Iconography and the Macellum Magnum

The reverse of this type provides an elaborate architectural representation of the Macellum Magnum, the grand central food and provisions market dedicated by Nero on the Caelian Hill in AD 59. The complex is depicted in frontal perspective as a magnificent two-story circular structure or tholos crowned by a domed or conical roof. The central rotunda features open columnar arcades on both stories, through which an elevated male figure standing upon a flight of steps is visible. The figure faces left and holds a long sceptre or staff in his left hand, often interpreted by scholars as a colossal statue of Nero or a presiding deity, such as a genius or the personification of the market. The central tholos is flanked by two projecting two-storied porticoes or wings with open colonnades, giving the viewer a comprehensive impression of a grand civic marketplace. This architectural composition ranks among the most sophisticated architectural depictions on Roman coinage, celebrating the princeps as an active benefactor who secured the food supply, restored urban infrastructure, and provided lavish public amenities for the populace of the capital.

Epigraphy and Legend Structure

The legends of RIC I (second edition) Nero 184 are engraved in classical Roman capitals and communicate both imperial authority and civil jurisdiction. The obverse legend reads NERO CLAVD CAESAR AVG GER P M TR P IMP P P, expanding into the standard imperial titles: Nero Claudius Caesar Augustus Germanicus, Pontifex Maximus, Tribunicia Potestate, Imperator, Pater Patriae. This sequence affirms his status as Augustus, his descent into the Claudian line, his military acclaim, his supreme priesthood, and his role as Father of the Country. The reverse legend is split into two primary components: the upper inscription MAC AVG across the field or upper perimeter, abbreviating Macellum Augusti (the Market of Augustus), and the traditional senatorial formula S C in the lower fields flanking the steps, standing for Senatus Consulto. Uniquely for this series, the numeral II is placed in the exergue at the bottom of the reverse die, providing an unambiguous declaration of the denomination as two asses. The inclusion of S C preserved the constitutional fiction that brass and copper coinages were authorized by the Senate, even as the design boldly promoted an imperial civil monument.

Typological Variants and Chronological Development

In the standard reference corpus of Roman Imperial Coinage, RIC I (second edition) Nero 184 is distinguished by its precise combination of radiate head facing right, the full obverse titulature ending in IMP P P, the Macellum Magnum reverse, and the exergual numeral mark II. The Macellum Magnum motif appeared on dupondii in multiple emissions between approximately AD 64 and AD 66. Neighboring types exhibit slight modifications: some dies render Nero's head facing left (RIC 185), while others present slightly varied titulature arrangements or omit the mark of value II entirely (such as RIC 186 and RIC 187). The issues carrying the mark of value II represent the initial phase of the reform dupondii struck around AD 64 to 65. Mint authorities quickly realized that the radiate crown on the obverse was sufficient to differentiate the dupondius from the laureate or bare-headed as, making the explicit numeral on the reverse redundant. Consequently, later emissions of the Macellum dupondii abandoned the numeral mark, maintaining only the S C formula. Thus, RIC 184 represents an early, short-lived diagnostic stage within Nero's post-reform aes production at Rome.

Circulation, Wear, and Archaeological Context

Dupondii of RIC I (second edition) Nero 184 circulated widely within the Italian peninsula and the western provinces of the Roman Empire. Because brass was inherently more valuable than pure copper, these heavy orichalcum pieces were heavily utilized in commercial centers for retail transactions, purchasing food, and paying modest wages. Archaeological excavation records and hoard evidence demonstrate that Neronian brass coinages enjoyed extensive longevity, remaining in circulation long after Nero's death and damnatio memoriae in AD 68. Many specimens found in military camps along the Rhine and Danube frontiers, as well as civilian sites in Roman Britain and Gaul, exhibit substantial circulation wear, often surviving into the Flavian and Antonine periods before being withdrawn. Despite official efforts under subsequent dynasties to excise Nero's name from public monuments, the practical necessity of base-metal circulating media ensured that his coinage continued to pass through hands for decades. The architectural detail of the Macellum Magnum often wore down over time, but the distinct profile of the radiate head and the robust flan ensured that these dupondii retained their recognized purchasing power throughout the first and early second centuries AD.

References

1. Coins of the Roman Empire in the British Museum, Volume I: Augustus to Vitellius. pp. clxiv-clxxii, 235-241
2. Roman Coins from the Earliest Times to the Fall of the Western Empire. pp. 110-125
3. Online Coins of the Roman Empire: RIC I (second edition) Nero 184. ric.1(2).ner.184
4. The Roman Imperial Coinage, Volume I: From 31 BC to AD 69. pp. 133-162