Trajan Orichalcum Dupondius, RIC II Trajan 502

Monetary Context and Denominational Function

Under the monetary system established during the Augustan principate and maintained through the early second century AD, base-metal coinage provided the transactional liquidity necessary for everyday urban commerce, retail trade, and minor state expenditures. Within this decimal-fractional hierarchy, the dupondius served as a mid-tier denomination valued at two copper asses, half of a brass sestertius, and one-eighth of a silver denarius. While the sestertius served as an imposing medium for imperial monumental propaganda and the copper as accommodated modest daily purchases, the dupondius occupied a vital intermediate position that facilitated retail flexibility and cash change across the empire. Technically, the Roman monetary authorities maintained a deliberate distinction between the alloys used for aes denominations. While the as was minted from relatively unalloyed red copper, both the sestertius and dupondius were manufactured from orichalcum, a copper-zinc alloy possessing a golden tint when newly struck. Because circulation wear and environmental patination could obscure the visual disparity in metal colors, the imperial mint consistently applied an explicit iconographic distinction beginning in the Neronian era: the emperor's portrait on the dupondius was crowned with a radiate solar diadem, whereas the portrait on the as bore a laurel wreath. RIC II Trajan 502 conforms strictly to this denominational grammar, combining an orichalcum flan with Trajan's radiate portrait to ensure unambiguous identification by the public.

Production and Mint Organization

The entire production run of RIC II Trajan 502 originated from the principal imperial mint at Rome. During Trajan's reign, the mint operated with highly structured officinae responsible for mass-producing gold, silver, and aes issues to fund public works, military campaigns, and civic distributions. Metallurgical studies of Trajanic aes demonstrate that the zinc content in orichalcum was steadily declining from the high percentages achieved in the first century AD, as Roman mints increasingly supplemented fresh calamine brass ores with recycled scrap bronze and copper. Nevertheless, the mint maintained rigorous control over the physical attributes of base-metal coin blanks. Blanks for dupondii were typically cast in multi-cavity moulds before being brought to temperature and struck between hand-held upper dies and anvil-mounted lower dies. Die alignment at Rome during this phase was heavily standardized, characteristically exhibiting a regular six o'clock or twelve o'clock axial orientation. The physical output of the dupondius during Trajan's fifth consulship was substantial, as demonstrated by the survival of numerous distinct obverse and reverse die pairs recorded across major European institutional collections. Die-engravers at Rome followed unified portrait styles established by master sculptors, yet minor stylistic variations in portrait modeling and letter spacing confirm the activity of multiple parallel workshops.

Obverse Iconography and Imperial Image

The obverse of RIC II Trajan 502 features a right-facing, radiate bust of Trajan. Engravers rendered the emperor in a mature, dignified style characterized by straight forward-brushed hair across the forehead, a firm jawline, a prominent aquiline nose, and an unyielding, determined expression. This portrait schema represents a transition away from the veristic portrait models inherited from Nerva toward an idealized yet stern civic princeps. Radiate spikes emerge symmetrically from the diadem around the crown of the head, signifying solar associations long integrated into Roman imperial numismatics to denote divine favor, vigilance, and the specific status of the dupondius. Slight drapery is visible gathered on Trajan's left shoulder, leaving the throat and base of the neck mostly bare while imparting a sense of classical sculptural elegance. The surrounding legend begins at the lower left and runs clockwise continuously around the circumference. The composition achieves an orderly balance between the physical portrait and the dense typographic border, with the tips of the radiate crown subtly interrupting the inner perimeter of the lettering without obscuring the reading.

Reverse Design and Iconography

The reverse of RIC II Trajan 502 is devoted to Fortuna, the personification of fortune, luck, and divinely guided prosperity. She stands draped in a long stola and mantle, facing toward the left. In her right hand, Fortuna grasps the tiller of a steering rudder positioned in front of the prow of a maritime ship. In her left arm, she cradles an overflowing cornucopiae filled with fruits and ears of grain, resting the heavy horn against her side. Across the lower field, the letters S and C are positioned to the left and right of the standing figure, or occasionally placed in the exergue beneath the ground line. This iconographic combination possesses layered political and economic significance. The ship's prow and steering rudder evoke safe navigation, maritime trade, and the crucial grain transport network connecting the port of Ostia with Egypt and Africa, an infrastructure that Trajan invested in through extensive harbour construction. The cornucopiae directly visualizes the material abundance that resulted from this secure navigation. Scholars note minor die varieties within the catalogued type: while the standard composition includes the prow beneath the rudder, occasional reverse dies omit the prow, depicting Fortuna resting the rudder directly upon the ground line.

Epigraphy and Legend Analysis

The epigraphic presentation on RIC II Trajan 502 reflects Trajan's comprehensive titular framework following his initial military successes in Dacia. The obverse inscription reads IMP CAES NERVAE TRAIANO AVG GER DAC P M TR P COS V P P. Expanded into unabbreviated Latin, this represents Imperatori Caesari Nervae Traiano Augusto Germanico Dacico, Pontifici Maximo, Tribunicia Potestate, Consuli Quintum, Patri Patriae. Notably formulated in the dative case rather than the nominative, the legend dedicates the coin to the emperor on behalf of the Roman state, expressing honorific submission to the ruler. The reverse inscription presents the celebrated motto S P Q R OPTIMO PRINCIPI, expanding to Senatus Populusque Romanus Optimo Principi ('The Senate and the Roman People, to the Best of Princes'). Bestowed upon Trajan by the senate around AD 103, the title Optimus Princeps referenced both civic virtue and the mythological protection of Iuppiter Optimus Maximus. The reverse field also incorporates the abbreviation S C for Senatus Consulto ('By Decree of the Senate'), affirming traditional senatorial oversight over the production and circulation of base-metal coinage in Rome.

Typology and Chronological Placement

Within the typology established by Harold Mattingly and Edward A. Sydenham in Roman Imperial Coinage, type 502 forms part of a cohesive family of aes struck between AD 103 and 111. The starting boundary of AD 103 is established by Trajan's assumption of his fifth consulship (COS V) and the widespread introduction of the dative obverse legend paired with the Optimo Principi reverse type. The series concluded around AD 111, when Trajan's sixth consulship (COS VI, entered January 1, 112) was anticipated and subsequently integrated into the imperial legends. Bernhard Woytek's refined study of Trajanic numismatics in Die Reichsprägung des Kaisers Traianus incorporates this issue within his broader fifth consulship framework under MIR 14, classifying it alongside parallel sestertii and asses sharing Fortuna iconography. RIC II Trajan 502 is catalogued with an internal variant regarding the presence or absence of the prow under Fortuna's rudder. Neighboring types in the catalogue feature Fortuna seated on a throne holding similar attributes, or standing with alternative subsidiary symbols, reflecting deliberate thematic cycles issued by the Rome mint across successive emission phases.

Circulation, Metrology, and Archaeological Context

As a medium-value base-metal coin, RIC II Trajan 502 circulated vigorously throughout Italy and the western provinces of the Roman Empire, including Gaul, Hispania, Britain, and the Danubian frontier zones. While gold and silver served as stores of wealth or were collected into hoard deposits, dupondii were continuously passed from hand to hand in market stalls, public baths, and grain depots. Consequently, archaeological finds of Trajanic dupondii frequently display considerable mechanical wear, smooth high points, and environmental oxidation from acidic burial contexts. In metrological terms, the Trajanic dupondius aimed for a theoretical target weight of approximately 11 to 13 grams with a flan diameter generally spanning 26 to 28 millimeters, though uncalibrated casting and chipping of flans created wide weight tolerances across individual specimens. Dupondii of this period circulated alongside surviving Julio-Claudian, Flavian, and Nervan aes. Because base-metal denominations were not systematically recalled or re-melted unless severely worn, specimens of RIC II Trajan 502 remained active in western market circulation well into the late Antonine and Severan periods, often recovered in site excavations alongside coins struck decades later.

References

1. Coins of the Roman Empire in the British Museum, Vol. III: Nerva to Hadrian. pp. 182-185
2. Online Coins of the Roman Empire: RIC II Trajan 502. ric.2.tr.502
3. The Roman Imperial Coinage, Vol. II: Vespasian to Hadrian. p. 281, no. 502
4. Die Reichsprägung des Kaisers Traianus (98-117) (MIR 14). no. 200