Trajan Orichalcum Sestertius, RIC II Trajan 430

Monetary Context and Denominational System

During the early second century AD, the monetary system established by Augustus and reformed under the Flavians remained the bedrock of the imperial Roman economy. Within this trimetallic structure, the sestertius functioned as the primary base-metal denomination for both official state accounting and day-to-day market transactions of moderate value. Valued at one-quarter of a silver denarius or four copper asses, the sestertius struck in orichalcum possessed a distinct golden sheen when freshly minted, which distinguished it visually from pure copper denominations such as the as and quadrans. Under Trajan, the physical integrity of the sestertius was rigorously maintained. The large flan of the denomination provided Roman mint officials and imperial propagandists with an expansive canvas for public messaging, functioning as a portable medium for civic and military announcements. The issue catalogued as RIC II Trajan 430 appeared at a crucial juncture in Trajan's reign, immediately following the outbreak of the First Dacian War in AD 101. While the empire mobilized substantial military manpower and logistical infrastructure along the Danubian frontier, imperial expenditures rose sharply. In this economic environment, bronze coinages were released into circulation in substantial volumes to pay military suppliers, maintain urban distribution networks, and reinforce civilian confidence in the political and financial equilibrium of the state.

Production Standards and Minting Practices

RIC II Trajan 430 was produced at the central imperial mint in Rome, which maintained exclusive authority over the striking of regular senatorial brass and copper coinage for the western empire. Sestertii of this period were cast as heavy, circular flans before being hand-hammered between carefully prepared iron dies. The metallurgical composition of the sestertius was nominally orichalcum, an alloy composed predominantly of copper with a zinc content typically ranging between 10 and 20 percent, though recycling of older bronze occasionally introduced modest levels of tin and lead. Weight standards for Trajanic sestertii during the fourth consulship clustered around an average of 25 to 28 grams, although individual surviving specimens exhibit significant variations above and below this median due to the ancient mint practice of al marco production, where coins were struck to a specific number per pound of metal rather than individually adjusted to exact tolerances. Die alignment for the issue typically adheres to a regular vertical or nearly vertical axis (often twelve o'clock or six o'clock), reflecting the disciplined operational habits of the urban monetarii in Rome. The physical striking required tremendous force delivered by heavy sledgehammers to bring up the high relief of Trajan's portrait and the intricate reverse design.

Obverse Iconography and Imperial Portraiture

The obverse of RIC II Trajan 430 features a clean, naturalistic portrait of Trajan facing right, adorned with a laurel wreath tied at the nape of the neck with fluttering ribbons. Stylistically, this portraiture breaks decisively from the baroque, idealized conventions of the late Flavian period and the aged physiognomy of Nerva. Trajan is shown with his characteristic straight-cut bangs brushed smoothly across the forehead, a firm jawline, a prominent nose, and a muscular neck that emphasizes his vigor and military background. The laurel wreath rests securely upon his brow, signifying his triumphal role as imperator and protector of the Roman state. Engravers at the Rome mint captured the emperor in mature prime, balancing civic modesty with unyielding imperial authority. The truncation of the neck is neatly modelled, resting comfortably within the inner boundary of the struck flan, while the peripheral legend encircles the bust in well-formed capital lettering without intrusion into the portrait itself.

Reverse Design and Allegorical Iconography

The reverse iconography of RIC II Trajan 430 centers on Concordia, the personification of civil and military harmony, seated toward the left upon an unadorned, backless stool or chair. She is draped in traditional matronly stola and palla that fall in rhythmic, natural folds to her feet. With her extended right hand, Concordia holds a shallow patera over a burning, lighted altar standing before her to the left, capturing the precise moment of a sacrificial libation offered to maintain divine favor. In her left arm, she cradles a prominent double cornucopiae, the mythical horn of plenty, brimming with fruits and agricultural produce. This visual juxtaposition unites two core concepts of Roman imperial ideology: piety toward the gods (pietas) as a prerequisite for unity (concordia), and civil peace as the sole foundation for shared prosperity (felicitas and ubertas). Below and to the sides of the seated goddess, the bold letters S and C (Senatus Consulto) assert the traditional authority of the Senate in approving the bronze issue, creating an institutional parallel to the harmony symbolized by the goddess herself.

Epigraphy and Imperial Titulature

The legends on RIC II Trajan 430 provide explicit chronological and political markers for the issue. The obverse inscription reads IMP CAES NERVA TRAIAN AVG GERM P M, expanding in Latin to Imperator Caesar Nerva Traianus Augustus Germanicus, Pontifex Maximus. This concise epigraphic sequence establishes Trajan's lineage through his adoption by Nerva, his supreme title of Augustus, his military victory on the Rhine that earned him the cognomen ex virtute of Germanicus in late AD 97, and his position as chief priest of the state religion. The reverse legend reads TR POT COS IIII P P S C, representing Tribunicia Potestate, Consul Quartum, Pater Patriae, Senatus Consulto. The absence of a specific numeral following TR POT reflects the conventional abbreviation of tribunician power used on imperial bronze during this period. The mention of his fourth consulship (COS IIII), which Trajan assumed on January 1, AD 101, provides the terminus post quem for the series. The title Pater Patriae (Father of his Country), accepted by Trajan late in AD 98, emphasizes his paternal care for the Roman commonwealth.

Typological Development and Chronological Placement

In the chronological framework established by Harold Mattingly and refined by Bernhard Woytek in his master corpus Die Reichsprägung des Kaisers Traianus, RIC II Trajan 430 is situated within Trajan's second major bronze emission of the fourth consulship, spanning the years AD 101 and 102. This period immediately preceded the award of the additional victory title Dacicus in late AD 102. Consequently, types lacking DACICVS or DAC can be securely placed prior to the formal conclusion of the first campaign against Decebalus. Typologically, Concordia seated with patera and double cornucopiae represents a continuation of an augustan virtue frequently mobilized by newly installed dynasties or during foreign campaigns to affirm domestic solidarity. While earlier issues of Nerva and the early reign of Trajan featured Concordia holding a single cornucopiae or standing before clasped hands, this specific sestertius variation with the lighted altar and double cornucopiae emphasizes the active religious devotion required of the state during wartime. The type is closely related to contemporary silver denarii and gold aurei bearing similar allegorical reverses, forming part of a coordinated ideological program across all denominations produced at Rome.

Circulation Patterns, Wear, and Hoard Contexts

As a principal denomination in base-metal commerce, specimens of RIC II Trajan 430 circulated extensively throughout Roman Italy and the European provinces. Archaeological finds from military sites along the Rhine and Danube frontiers, as well as urban excavations in Roman Britain, Gaul, and Hispania, demonstrate that Trajanic sestertii remained active in everyday market transactions for generations. Because base metal circulated until dies were completely worn down or the coins suffered extreme metal loss, surviving examples often display substantial smoothing, edge bruising, and deep olive or brown patinas consistent with long burial in varied soils. Large aes hoards buried during the mid-to-late second century, and even during the financial crises of the third century under the Severan and soldier emperors, frequently contained Trajanic sestertii alongside issues of Hadrian and Antoninus Pius. The durable orichalcum flan resisted rapid catastrophic corrosion better than thin debased silver, allowing RIC II Trajan 430 to fulfill commercial functions across the empire decades after Trajan's initial Dacian victories.

References

1. Coins of the Roman Empire in the British Museum, Volume III: Nerva to Hadrian. pp. 152-154
2. The Roman Imperial Coinage, Volume II: Vespasian to Hadrian. pp. 275-276, no. 430
3. Online Coins of the Roman Empire: RIC II Trajan 430. ric.2.tr.430
4. Die Reichsprägung des Kaisers Traianus (98-117 n. Chr.) (MIR 14). Moneta Imperii Romani 14