Trajan Orichalcum Dupondius, RIC II Trajan 586

Monetary Context and Denominational Function

The monetary system of the High Roman Empire operated on a multi-tiered bimetallic and base-metal standard established during the reign of Augustus and maintained with periodic adjustments through the Flavian and adoptive dynasties. Within this framework, the dupondius occupied a crucial intermediate position in daily retail transactions, valued at two copper asses, one-half of an orichalcum sestertius, or one-eighth of a silver denarius. While the sestertius served as the preeminent large-module bronze denomination and an official unit of account, dupondii facilitated everyday commercial exchanges that required values higher than individual copper fractions but smaller than silver denarii. The metal selected for the dupondius was orichalcum, a golden-hued copper-zinc alloy known modernly as brass. Because orichalcum was more valuable than unalloyed copper, the dupondius was deliberately struck on a flan similar in diameter to the copper as, but possessing higher purchasing power per unit of weight. To prevent commercial confusion between the similarly sized denominations, imperial authorities standardized the radiate crown as the exclusive portrait attribute of the emperor on dupondii, whereas the as consistently depicted the emperor with a laureate bust or bare head. RIC II Trajan 586 embodies this established convention, using the radiate bust to convey denomination unmistakably to merchants and consumers across the empire.

Production Standards and Minting Operations

RIC II Trajan 586 was struck centrally at the mint of Rome, the primary administrative and operational facility responsible for base-metal coinage distributed throughout Italy and the western provinces. During Trajan's reign, the Rome mint reached exceptional levels of administrative sophistication and productive capacity, organized into multiple working divisions or officinae capable of executing massive coinages to fund imperial campaigns, public building projects, and civic distributions. The production of orichalcum coinage required careful metallurgical control. Cementation brass was prepared by heating copper in crucibles together with charcoal and calamine zinc ore, creating an alloy with a bright golden appearance when newly struck. Flan preparation involved casting blank disks in molds followed by hot or cold striking between hand-cut iron or bronze dies. In terms of physical specifications, the dupondius under Trajan was typically struck to a target standard centered approximately between 11.5 and 14.5 grams, with typical diameters ranging between 26 and 29 millimeters. Die alignment was predominantly oriented at six o'clock or twelve o'clock, reflecting the regulated mechanical practices of the imperial mint. Although weight tolerance within individual striking batches could vary due to the ancient technique of striking al marco, the purchasing value of the dupondius was protected by state authority rather than precise bullion equivalence.

Obverse Iconography and Imperial Representation

The obverse of RIC II Trajan 586 features a mature portrait of Trajan facing right, wearing the radiate crown that marks the coin as a dupondius. Die cutters at the Rome mint captured the emperor's recognized physiognomy, including his low forehead, straight hair brushed forward in the customary military style, prominent nose, and firm, determined jawline. Trajan's bust is typically depicted draped, cuirassed, or bare-necked with slight drapery at the truncation, and certain dies incorporate an aegis on the shoulder, associating the ruler with Jupiter's protective aegis and divine defense. The radiate crown itself carries dual significance. While fulfilling its practical denominational function, it also evoked solar imagery associated with Sol and Apollo, projecting an aura of divine charisma and vitality. Trajan's portraiture during this middle period of his reign breaks distinctly from the domestic realism of the Flavian period and the brief transitional style of Nerva, establishing an austere, resolute image of the soldier-emperor dedicated to the security and territorial expansion of the Roman world.

Reverse Iconography and the Dacian Victory

The reverse of RIC II Trajan 586 presents a detailed military trophy, a central motif in the victory program celebrating the conquest of Dacia. The trophy is constructed on a wooden pole and dressed in captured barbarian battle equipment: a conical or crested helmet at the top, a Roman or foreign cuirass across the torso, and an ensemble of captured weaponry including one round shield and one oblong shield affixed to the crossbar. At the base of the trophy, on either side of the trunk, two additional captured shields are set upon the ground line, typically arranged as one circular buckler and one elongated oval or hexagonal shield. Trophy iconography was an ancient Mediterranean artistic convention deeply ingrained in Roman civic memory, functioning as a tangible monument to battlefield victory and divine favor. On Trajan's coinage, the specific juxtaposition of curved oval shields and decorated round targets directly reflects the spoils taken from King Decebalus and the Dacian tribes during the campaigns concluded between AD 102 and 106. The static, monumental presentation of the trophy on the dupondius conveyed lasting pacification and the total subjugation of the frontier enemy, emphasizing security won through Roman arms.

Epigraphy and Imperial Titulature

The inscriptions on RIC II Trajan 586 follow the formalized grammatical and ideological conventions of second-century imperial epigraphy. The obverse legend reads IMP CAES NERVAE TRAIANO AVG GER DAC P M TR P COS V P P, rendered in the dative case to signify that the coin and its honorific sentiments are offered to the emperor. Transcribed in full, the titles represent Imperatori Caesari Nervae Traiano Augusto Germanico Dacico, Pontifici Maximo, Tribunicia Potestate, Consuli Quintum, Patri Patriae. This sequence confirms his descent from the deified Nerva, his supreme religious leadership as Pontifex Maximus, his civil authority via the tribunician power, his fifth consulship, and his standing as Father of the Fatherland. The reverse inscription reads S P Q R OPTIMO PRINCIPI, expanding to Senatus Populusque Romanus Optimo Principi, also framed in the dative case. This formula declares that the Senate and the Roman people dedicate the coin type to the 'Best of Princes.' The epithet Optimus Princeps was officially decreed by the Senate to celebrate Trajan's moderation, civic benefactions, and military success. Accompanied by the letters S C across the field for Senatus Consulto, the legend emphasizes the constitutional collaboration between the princeps and the senatorial order in authorizing the production of token base-metal currency.

Typological Classification and Chronological Placement

In the standard reference classification of Harold Mattingly and Edward Sydenham, this issue is cataloged as RIC II Trajan 586. Modern classification by Bernhard Woytek in his corpus Die Reichsprägung des Kaisers Traianus integrates the type within the major series of Trajan's fifth consulship. Trajan entered his fifth consulship on January 1, AD 103, and did not assume his sixth consulship until AD 112. Consequently, all coins bearing the formula COS V without COS VI must fall within the broad calendar window of AD 103 through 111. Within this nine-year span, numismatists assign the trophy series more precisely to the period following the conclusion of the Second Dacian War in AD 106. The assumption of the victory title Dacicus had already occurred by late AD 102, but the comprehensive trophy and captive reverse types proliferated most heavily between AD 107 and 111 to celebrate the final annexation of Dacia as a Roman province and the staging of Trajan's magnificent triumph in Rome. Typological variants of RIC 586 primarily concern the truncation and drapery of the imperial bust, with minor die-cutting differences in the arrangement and ornamentation of the shields surrounding the trophy.

Circulation Patterns and Archaeological Context

Dupondii of the Optimus Princeps series circulated extensively throughout the Roman world, functioning as vital small-change instruments across domestic markets, military installations, and trade networks. Excavations at military fortresses along the Rhine and Danube frontiers, as well as civilian settlements in Italy, Gaul, and the Iberian peninsula, frequently document Trajanic dupondii in site finds and stratified occupational layers. Their presence in Danubian legionary camps highlights the direct economic link between coin production in Rome and the payment and supply of Roman armies stationed along the newly consolidated northern border. Due to their base-metal composition and low intrinsic value relative to gold and silver, dupondii rarely traveled outside the administrative boundaries of the empire, remaining within zones where imperial token money was legally recognized. Wear patterns on surviving specimens indicate prolonged circulation lifetimes; Trajanic aes denominations regularly remained in active commercial use for several decades, often circulating well into the Antonine and Severan eras until third-century debasements and monetary restructuring gradually drove them out of exchange.

References

1. Online Coins of the Roman Empire: RIC II Trajan 586. ric.2.tr.586
2. The Roman Imperial Coinage, Volume II: Vespasian to Hadrian. p. 285, no. 586
3. Untersuchungen zur römischen Reichsprägung des zweiten Jahrhunderts, Teil I: Die Reichsprägung zur Zeit des Traian. pp. 110-125
4. Die Reichsprägung des Kaisers Traianus (98-117), Moneta Imperii Romani 14. MIR 14, nos. 200-268