Trajan Bronze Sestertius, RIC II Trajan 510 (sestertius)

Monetary Context and Denominational Role

Under the Principate, the sestertius served as the flagship brass denomination of the Roman monetary system. Valued at one quarter of a silver denarius or four copper asses, the sestertius offered a large physical flan that made it the premier vehicle for official political and religious messaging directed at the urban population of Rome and provincial citizens alike. By the reign of Trajan (AD 98 to 117), the monetary system instituted by Augustus and modified by Nero and the Flavians remained essentially intact, yet military expenditures generated by ambitious northern expansion required significant fiscal administration. The issue of RIC II Trajan 510 coincided with a massive influx of bullion and war spoils secured from the Dacian campaigns, which enriched the imperial fiscus and financed an extensive domestic building program alongside generous public distributions. As an orichalcum coin, the sestertius possessed a bright golden-yellow appearance when newly minted, distinct from the reddish tone of pure copper denominations such as the as and quadrans. This visual distinction reinforced the prestige of the denomination in everyday market transactions. The denominational stability of the sestertius ensured its wide acceptance throughout Italy and the provinces, functioning as a primary medium for high-value retail purchases, tax obligations, and contractual payments.

Production Standards and Minting Operations

RIC II Trajan 510 was manufactured exclusively at the principal imperial mint in Rome. Production involved the preparation of high-grade copper-zinc alloy blanks (orichalcum), generally cast in open or clustered molds and subsequently adjusted by cold hammering before being brought to striking temperature. In accordance with the standards of the middle Trajanic period, these sestertii exhibit a nominal target weight in the range of twenty-five to twenty-seven grams and a typical diameter of thirty-two to thirty-five millimeters, though individual specimens vary depending on blank preparation and flan trimming practices. Striking was executed with heavy bronze dies mounted in manual hammer presses, demanding considerable physical force to bring the high-relief portraits and reverse figures into sharp definition. The Rome mint during this period was organized into multiple administrative officinae, facilitating simultaneous engraving and striking of gold, silver, and aes issues. Die-axis alignment for this issue exhibits the standard Roman imperial preference for approximate medal or coin orientation, typically resting close to six o'clock or twelve o'clock, reflecting disciplined workshop standards despite the massive scale of civic bronze output.

Obverse Iconography and Variations

The obverse of RIC II Trajan 510 presents a commanding portrait of Emperor Trajan facing right. The head is bound with the triumphal laurel wreath, with laurel ties extending down the back of the neck. The bust treatment is specifically described in standard corpora as laureate with drapery displayed upon the left shoulder. Minor die variants include the addition of the aegis, a mythical attribute associated with Minerva and Jupiter, positioned on the front or left shoulder to project divine invulnerability and imperial vigilance. The portraiture is rendered in the mature, sober veristic style that characterized the mid-reign of Trajan, displaying his characteristic low forehead, straight nose, firm jawline, and combed-forward hair. This iconographic model departed intentionally from the dramatic Flavian baroque portraiture of Domitian, emphasizing instead classical restraint, military fortitude, and republican decorum.

Reverse Design and Symbolic Meaning

The reverse of the type features Pax, the personification of peace, seated gracefully facing left upon an ornate throne. In her right hand she extends an olive branch, the universal classical symbol of reconciliation and clemency, while her left hand supports a tall vertical sceptre indicating sovereign divine authority. Beneath her feet and to the lower left, a defeated Dacian captive is depicted kneeling right in supplication, adorned in characteristic barbarian costume. This iconographic pairing represents an explicit visual synthesis of the phrase 'Pax Augusta per victoriam': peace was not presented as a passive state of quietude, but as an active condition achieved through the total submission and pacification of Rome's enemies on the Danube frontier. Below the primary scene or in the flanking fields, the letters S C appear prominently, confirming that the striking occurred under the formal constitutional authority of the Senate.

Epigraphy and Titulature

The obverse inscription reads IMP CAES NERVAE TRAIANO AVG GER DAC P M TR P COS V P P. Rendered in the dative case (Neruae Traiano), the legend frames the coinage as an explicit dedication to the emperor. The sequence abbreviates the full imperial titulature: Imperator Caesar, son of the divine Nerva, Traianus Augustus, victor in Germany (Germanicus), victor in Dacia (Dacicus), Pontifex Maximus, invested with Tribunician Power, Consul for the fifth time, and Father of his Country (Pater Patriae). On the reverse, the legend continues this dedicatory sentiment with S P Q R OPTIMO PRINCIPI, followed by S C (Senatus Consulto). The reverse legend translates to 'The Senate and the Roman People, to the Best of Princes.' The appellation 'Optimus Princeps', originally bestowed upon Trajan by the Senate around AD 103, served as a foundational slogan on Trajanic coinage, celebrating civic beneficence and moral leadership alongside military triumph.

Typology and Chronological Placement

In the foundational cataloguing system of Mattingly and Sydenham, this issue is classified under RIC II Trajan 510. Chronologically, the type is anchored firmly by the consular date COS V, indicating Trajan's fifth consulship, entered on 1 January AD 103, and terminating before his sixth consulship (COS VI) in AD 112. The presence of the victory title DAC (Dacicus), adopted late in AD 102, establishes that the type was initiated in or after AD 103. In his comprehensive restructuring of Trajanic numismatics (MIR 14), Bernhard Woytek contextualized this sestertius within the expansive 'Optimo Principi' series produced following the First and Second Dacian Wars, assigning the central issue window to circa AD 103 through 107, though residual striking within the broader COS V period may extend to AD 111. While catalogued as a unified type, variations exist across surviving dies regarding the presence of drapery versus aegis on the shoulder, as well as the spatial distribution of the reverse letters S C in the field or exergue.

Circulation, Hoards, and Archaeological Context

Due to the economic significance and high production volume of Trajanic aes, RIC II Trajan 510 enjoyed widespread geographical circulation throughout the Roman Empire. Specimens are regularly documented in archaeological site finds and bronze hoards across Italy, Gaul, the Iberian peninsula, the Rhine-Danube limes, and Britannia. In military garrison contexts along the northern frontiers, sestertii of this type remained in everyday circulation for decades, often exhibiting substantial surface wear, countermarking, or corrosion from prolonged deposition in wet soils. Hoard evidence indicates that Trajanic sestertii continued to circulate well into the late Antonine and Severan eras, reflecting the enduring intrinsic value and legal-tender status of early second-century brass coinage before the debasement crises of the third century AD.

References

1. Online Coins of the Roman Empire: RIC II Trajan 510 (sestertius). ric.2.tr.510_sestertius
2. The Roman Imperial Coinage, Vol. II: Vespasian to Hadrian. p. 281, no. 510
3. Untersuchungen zur romischen Reichspragung des zweiten Jahrhunderts, Teil I: Die Reichspragung zur Zeit des Traian. Teil I, Traian
4. Arma et Nummi: Forschungen zur romischen Finanzgeschichte und Munzpragung der Jahre 96 bis 117 n. Chr.. MIR 14