Trajan Orichalcum Sestertius, RIC II Trajan 503 (sestertius)

Monetary System and Imperial Ideology

During the High Roman Empire, the sestertius stood as the premier large-format base-metal denomination within the bimetallic monetary structure reformed under Augustus. Valued at one quarter of a silver denarius or four copper asses, the sestertius was conventionally struck in orichalcum, a golden-toned copper-zinc brass alloy prized for its bright appearance and sharp relief when newly minted. Beyond its standard commercial utility in everyday trade, the denomination's expansive surface area, typically measuring 32 to 35 millimeters in diameter, made it an essential medium for imperial public communication. Base-metal coinage reached all levels of provincial and urban society, allowing the imperial court to disseminate political programs, military triumphs, and social benefactions across the Mediterranean world. The issuance of RIC II Trajan 503 belongs to a dynamic period following the Second Dacian War, when an influx of Dacian gold and silver enriched the imperial treasury, stimulating extensive civic building projects in Rome and heavy mint output across all denominations.

Production Standards and Mint Organization

All specimens of RIC II Trajan 503 were manufactured exclusively at the primary imperial mint in Rome. Production of large brass flans involved casting blanks in open or two-part molds followed by hot striking between hand-carved steel or bronze dies. Mint workers maintained tight physical control over flan weights, targeting a mean standard around 26 to 27 grams, though operational tolerances naturally produced surviving specimens ranging from approximately 23 grams to over 29 grams. The mint at Rome operated in several specialized officinae or workshops, dividing the preparation of dies, furnace heating of planchets, and hammer striking. Metallurgical analyses of Trajanic orichalcum demonstrate a controlled brass formulation containing roughly 15 to 20 percent zinc, mixed with small percentages of tin and lead to facilitate metal flow into deep die recesses. The high-relief engraving observed on this issue reflects the peak technical capacity of Trajanic die-cutters, who produced remarkably consistent portraiture across substantial production runs.

Obverse Iconography and Portraiture

The obverse presents a right-facing portrait bust of Trajan wearing the laurel wreath, the classic attribute of military triumph and supreme imperium. In keeping with the mature stylistic phase of Trajanic portraiture established after AD 102, the emperor is depicted with a prominent brow, deep-set eyes, straight nasal bridge, and tightly cropped hair combed forward in linear strands. The jaw is firm and unyielding, projecting the civic sobriety and soldierly discipline celebrated in contemporary literature such as Pliny the Younger's Panegyricus. Certain die varieties of RIC II Trajan 503 include an aegis draped over the far shoulder, a mythological attribute associated with Jupiter and Minerva consisting of a protective goatskin collar or mantle. The inclusion of the aegis subtly elevates the princeps from a victorious human magistrate to a leader enjoying immediate divine protection and cosmic patronage.

Reverse Iconography of Pax and the Dacian Captive

The reverse design of this type features the goddess Pax standing facing toward the left, draped in a long stola. In her extended right hand, she holds an olive branch angled downward, while cradling a cornucopiae laden with fruit in her left arm. The olive branch and horn of plenty traditionally signified reconciliation, stability, and the material abundance resulting from civil harmony. On RIC II Trajan 503, however, this peaceful imagery is sharply juxtaposed with martial subjugation: Pax rests her right foot directly upon the head and shoulders of a prostrate Dacian captive emerging from the ground line. The Dacian figure, identifiable by disordered locks and distinctive native dress, symbolizes the absolute defeat of Decebalus and his kingdom. Rather than depicting peace as a passive diplomatic condition, the tableau portrays peace as an active condition forcibly imposed and maintained by Roman military might.

Epigraphic Formulae and Titulature

The legends on this sestertius provide vital chronological and ideological context. The obverse inscription reads IMP CAES NERVAE TRAIANO AVG GER DAC P M TR P COS V P P, expanding to Imperatori Caesari Nervae Traiano Augusto Germanico Dacico, Pontifici Maximo, Tribunicia Potestate, Consuli Quintum, Patri Patriae. This sequence affirms Trajan's dynastic adoption by Nerva, his victory titles for campaigns in Germania and Dacia, his supreme pontificate, and his civil standing as five-time consul and Father of the Fatherland. The reverse legend, S P Q R OPTIMO PRINCIPI, expands to Senatus Populusque Romanus Optimo Principi, recording the Senate and Roman People's formal dedication to the Best of Princes.Flanking the central reverse figure are the letters S C, signifying Senatus Consulto, which confirmed that the bronze coinage was minted under the traditional sanction of a senatorial decree, even though absolute monetary authority resided with the emperor.

Typology and Chronological Placement

Within the typology of the Roman Imperial Coinage, RIC II Trajan 503 is dated between AD 103 and 111. The starting threshold is established by Trajan's fifth consulship, assumed on January 1, AD 103, combined with the presence of the agnomen Dacicus, formally adopted in late AD 102 following the conclusion of the First Dacian War. The terminal date of AD 111 is marked by the assumption of his sixth consulship on January 1, AD 112, at which point reverse legends transitioned to cite COS VI. Bernhard Woytek's specialized monograph on Trajanic coinage assigns this reverse type to the massive mid-reign commemorative series, with peak production concentrated between AD 105 and 108 during and immediately after the final annexation of Dacia. Numismatists identify distinct die variants within the type, primarily differing in the presence or absence of the aegis on the obverse bust and slight variations in the posture of the captive.

Circulation Patterns and Archaeological Evidence

Archaeological excavation finds and hoards demonstrate that Trajan's sestertii circulated extensively across the Roman Empire, from the legionary frontiers along the Rhine and Danube to urban markets in Italy, Gaul, Hispania, and Britannia. Because base-metal sestertii possessed considerable purchasing power, often covering daily wages or major market transactions, they remained in circulation for decades. Hoard data from the Antonine and Severan periods regularly contain worn specimens of Trajan's sestertii, indicating that issues of this series often functioned as currency for fifty to one hundred years after initial striking. The aggressive reverse imagery of Pax subjugating the Dacian served as a lasting visual emblem of Trajanic prosperity and Roman hegemony, enduring in circulation long after the Dacian campaigns had faded from living memory.

References

1. Coins of the Roman Empire in the British Museum, Volume III: Nerva to Hadrian. pp. 169-170, nos. 799-804
2. RIC II Trajan 503 (sestertius). Type record ric.2.tr.503_sestertius
3. The Roman Imperial Coinage, Volume II: Vespasian to Hadrian. p. 280, no. 503
4. Untersuchungen zur römischen Reichsprägung des zweiten Jahrhunderts, Teil I: Reichsprägung zur Zeit des Traian. type catalogue Trajan, no. 360
5. Die Reichsprägung des Kaisers Traianus (98-117) (MIR 14). Moneta Imperii Romani 14, type 200