Trajan Bronze Sestertius, RIC II Trajan 678

Monetary Context and Denominational Function

During the High Roman Empire, the sestertius formed the cornerstone of everyday commerce, high-volume state payments, and fiscal accounting. Valued at four asses, two dupondii, or one quarter of a silver denarius, the denomination was struck in orichalcum, a golden-toned copper-zinc brass alloy prized for its distinct visual appearance and durability. Under Trajan, the sestertius served as the largest circulating bronze denomination, making it the preferred medium for conveying elaborate imperial iconography and architectural achievements to the public. The expansive diameter and thickness of the sestertius flan permitted detailed artistic compositions that could not be rendered effectively on smaller silver or bronze coins. RIC II Trajan 678 was authorized during a period of substantial financial liquidity resulting from the conquest of Dacia, which infused the Roman treasury with vast quantities of precious metals and funded extensive urban renewal projects in Rome. The issue functioned simultaneously as legal tender across imperial markets and as a physical instrument of state celebration, reinforcing the ideological cohesion of the Senate, the Roman people, and the princeps.

Production Standards and Minting Operations

The entire production of RIC II Trajan 678 was concentrated at the central imperial mint in Rome. By the early second century AD, the Rome mint operated under a sophisticated administrative hierarchy divided into specialized workshops or officinae, which managed large-scale metal refining, blank casting, and die engraving. Blank flans for orichalcum sestertii were typically cast in multi-cavity moulds, adjusted for weight, and heated before striking to accommodate the deep relief required by the extensive legend and monumental reverse design. Surviving specimens across this general series typically align with the standard Trajanic sestertius weight norm of approximately 24 to 28 grams, with diameters commonly spanning 32 to 35 millimeters, though historical circulation wear and slight alloying variations account for measurable variance in individual specimens. Mint engravers demonstrated exceptional technical mastery in cutting the reverse dies, rendering the multi-tiered plinth, the spiral relief bands of the shaft, and the crowning imperial statue with remarkable architectural fidelity.

Obverse Iconography and Imperial Portraiture

The obverse of RIC II Trajan 678 presents a mature, idealized portrait of Trajan facing right, wearing a laurel wreath and draped across the shoulder. The portraiture belongs to Trajan's later iconographic type, often referred to in modern scholarship as the decennalia or late portrait phase, characterized by realistic facial features, prominent jawline, cropped hair combed forward, and authoritative gaze, combined with the traditional heroic draping of the principate. The laurel wreath rests securely on the head, with ties descending toward the nape of the neck. Engravers positioned the bust to maximize the surrounding circumference for the unusually long imperial legend, maintaining balanced spacing between the lettering and the outer beaded border. The design conveys stability, military virtue, and civil dignity, reflecting Trajan's standing in the final years of his reign.

Reverse Design and the Column of Trajan

The reverse of the type features a meticulous depiction of the Column of Trajan, the triumphant monument erected in the Forum of Trajan and dedicated in AD 113. The structure is shown resting on a rectangular pedestal decorated with wreaths and festoons, bordered on either side of the base by two standing eagles with wings displayed or folded. The tall column shaft is engraved with faint diagonal lines evoking the helical frieze that chronicled the Dacian Wars. At the summit, above the Doric capital and viewing gallery platform, stands a heroic bronze statue of Trajan, holding a spear and globe. Flanking the lower fields of the column are the prominent letters S and C, denoting Senatus Consulto, the explicit legal authority of the Senate over bronze issues. Architectural historians and numismatists have noted that while the die engravers slightly compressed horizontal proportions to fit the circular flan, the essential elements of the monument, including the basal eagles and the spiral relief concept, were captured with striking fidelity.

Inscriptions, Titulature, and Epigraphy

The obverse inscription reads IMP CAES NER TRAIANO OPTIMO AVG GER DAC P M TR P COS VI P P, expanding to Imperatori Caesari Nervae Traiano Optimo Augusto Germanico Dacico, Pontifici Maximo, Tribunicia Potestate, Consuli Sextum, Patri Patriae. This epigraphic sequence is notable for its incorporation of the title Optimus in the dative case along with Trajan's other names, following the Senate's formal decree in AD 114 granting him the title as a personal cognomen. The reverse legend reads SENATVS POPVLVSQVE ROMANVS, accompanied by S C in the field. The use of the dative formula on the obverse paired with the nominative Senatus Populusque Romanus on the reverse establishes a deliberate dedication: The Senate and the Roman People dedicate this monument to the Emperor Caesar Nerva Trajan Optimus Augustus. The lettering reflects classical Roman square capitals, carefully scaled to maintain legibility despite the extreme density of the epigraphic text.

Typology, Dating, and Die Variations

The production of RIC II Trajan 678 is securely assigned to the chronological window between AD 114 and Trajan's death in AD 117. The inclusion of OPTIMO in the obverse titulature provides a firm terminus post quem of autumn AD 114, when the Senate formally elevated the epithet to an official part of the emperor's name. In Bernhard Woytek's exhaustive corpus Die Reichsprägung des Kaisers Traianus (MIR 14), this issue corresponds to the late column series struck in conjunction with the conclusion of the Parthian campaigns and the culmination of civic architectural projects. Minor die varieties occur across the series, primarily involving the degree of drapery visible on Trajan's shoulders, subtle differences in portrait truncation, the precise posture and wing configuration of the basal eagles, and the spacing of S C relative to the pedestal. It remains typologically distinct from earlier column sestertii struck between AD 112 and 113, which lacked the title Optimus on the obverse and exhibited slightly different reverse legend arrangements.

Circulation Patterns and Monetary Afterlife

As high-value brass coins, sestertii of the Trajanic column type circulated heavily across the Italian peninsula and the wider western provinces of the Roman Empire, where the monetized market economy relied extensively on imperial bronze. Hoard evidence and excavation records from military camps along the Rhine and Danube frontiers, as well as urban centers in Gaul, Hispania, and Italy, demonstrate that Trajan's orichalcum coinage remained in active circulation for decades. Many surviving specimens show substantial smoothing and wear from hand-to-hand transactions extending well into the Antonine and Severan eras. Despite this long operational lifetime, the distinctive architectural silhouette of Trajan's Column remained readily recognizable to contemporary users, ensuring that the visual testament of Trajan's monumental civic legacy persisted in public memory long after his death.

References

1. The Column of Trajan in Rome: The Numismatic Evidence and Architectural History. American Journal of Numismatics 21 (2009), pp. 125-157
2. Online Coins of the Roman Empire: RIC II Trajan 678. ric.2.tr.678
3. The Roman Imperial Coinage, Vol. II: Vespasian to Hadrian. p. 290, no. 678
4. Die Reichsprägung des Kaisers Traianus (98-117 n. Chr.) (MIR 14). Moneta Imperii Romani 14, type 522