Trajan Gold Aureus, RIC II Trajan 324 (aureus)

Monetary and Historical Context

During the second decade of the second century AD, the Roman imperial monetary system functioned upon a trimetallic foundation anchored by the gold aureus, the silver denarius, and base metal denominations including the sestertius, dupondius, and as. The aureus operated as the primary high-denomination medium of value, used predominantly for state-level disbursements, military remuneration for upper echelons of the Roman army, international commerce, and large fiscal transfers. Trajan implemented critical monetary adjustments earlier in his principate, having recalibrated the silver denarius in AD 107 by retiring worn pre-Neronian coinage and utilizing vast spoils from the conquest of Dacia to stabilize imperial bullion reserves. Gold aurei struck during this era adhered to a theoretical standard of forty-five coins to the Roman pound, corresponding to an average weight of approximately 7.2 to 7.3 grams of exceptionally pure gold. RIC II Trajan 324 appeared within this robust monetary milieu, specifically commemorating imperial initiatives in the East. In AD 113, Trajan embarked upon his eastern expedition against Parthia following diplomatic disputes over the royal succession in Armenia. By AD 114, Trajan had annexed Armenia, subdued upper Mesopotamia, and accepted the Senate's conferral of the title Optimus along with military salutations that soon prompted the formal adoption of Parthicus. This aureus was struck to project the ideological success of this eastern policy to Roman elites and key military commanders through high-value gold currency.

Production and Mint Organization

The production of RIC II Trajan 324 is securely attributed to the imperial mint at Rome, the primary facility responsible for the design and striking of precious-metal currency throughout Trajan's principate. While certain provincial or military mints in the East operated to supply local campaigns, the master die cutting and refined stylistic execution of this aureus align decisively with the central urban mint's officinae. Production followed standard Roman mint practices of the high imperial period. Blanks were cast in individual molds or clipped from cast rods of high-purity gold, heated to ensure malleability, and positioned between hand-carved bronze or iron dies before receiving heavy hammer strikes. The engraving style of the obverse portrait demonstrates the polished, naturalistic realism cultivated by the premier engravers of the capital during Trajan's late reign. Die orientation was typically aligned at six o'clock or twelve o'clock, reflecting systematic workshop management within the Rome mint. The volume of gold struck under this specific catalogue type was limited relative to everyday silver denarii, as aurei fulfilled targeted political and economic payments rather than general retail circulation.

Obverse Iconography and Imperial Image

The obverse of RIC II Trajan 324 presents a mature, right-facing bust of Trajan. The emperor is depicted wearing a laurel wreath, tied at the nape of the neck with fluttering ribbons, and is shown both draped and cuirassed. The military cuirass underscores his identity as commander-in-chief leading active field operations, while the mantle of the paludamentum confers civil and military dignity. By AD 114, portraiture of Trajan had evolved from the idealized, youthful decennalia types toward a somber, seasoned imperial likeness characterized by linear facial contours, a firm jaw, close-cropped hair combed forward across the forehead, and pronounced nasal-labial folds. This mature portrait tradition, frequently categorized by modern scholars within Trajan's late imperial bust types, communicated unwavering resolve, military competence, and gravitas. The surrounding legend forms a continuous circular border, beginning low on the left and encircling the portrait without interruption, framed by a delicate outer border of dots.

Reverse Iconography and Triumphal Motif

The reverse of the coin displays a powerful visual composition rooted in classical Roman triumphal traditions: a vertical military trophy erected centrally in the field, flanked at the base by two bound or lamenting Parthian captives seated on the ground. The trophy consists of captured enemy armor arranged on a tree trunk or wooden post, including a helmet, cuirass, oval or hexagonal shields, and greaves. Below the arms of the trophy, two captive figures, personifying defeated Parthia, sit directly on the ground in postures of grief, submission, and defeat, one positioned to the left and the other to the right. The captives wear eastern attire, typically characterized by sleeved tunics and long trousers (anaxyrides), distinguishing them visually from the bare-legged Celtic or Germanic barbarians depicted on earlier Roman issues. This compositional scheme, historically known as a trophy with captives, had a long pedigree in Roman republican and early imperial coinage. On RIC II Trajan 324, it delivers an explicit message of total subjugation, asserting that Parthia's formidable military strength had been broken and laid prostrate beneath the Roman arms.

Inscriptions and Epigraphic Analysis

The epigraphy of RIC II Trajan 324 is integral to its precise historical and chronological placement. The obverse legend reads IMP CAES NER TRAIAN OPTIM AVG GER DAC PARTHICO, rendered in the dative case or an extended nominative-dative blend typical of late Trajanic issues. The inscription expands to Imperatori Caesari Nervae Traiano Optimo Augusto Germanico Dacico Parthico, presenting Trajan's complete triumphal titles: victor over the Germans (Germanicus), conqueror of the Dacians (Dacicus), and newly acclaimed subjugator of Parthia (Parthicus), alongside the senate-awarded title Optimus ('the Best'). The reverse legend features a composite formula: P M TR P COS VI P P S P Q R, reading Pontifex Maximus, Tribunicia Potestate, Consul Sextum, Pater Patriae, Senatus Populusque Romanus. This standard enumerative titulature records his supreme priesthood, imperial tribunician power, sixth consulship (first entered in AD 112), and role as father of the country, acting under the formal authority of the Senate and People of Rome. Beneath or within this framework, the legend adds the explicit legend PARTHICA CAPTA ('Parthia Captured'), echoing similar historical triumphal formulas such as Aegypto Capta under Augustus or Judaea Capta under the Flavians. This epigraphic statement elevates the military outcome from a border stabilization to the nominal conquest of the Parthian realm.

Typology and Chronological Placement

Catalogued in Roman Imperial Coinage as RIC II Trajan 324, this gold aureus belongs to the expansive Parthico series struck between late AD 114 and Trajan's death in AD 117. While standard reference works such as OCRE place the baseline inception of the type in AD 114 based on the initial awarding of the title Parthicus and the continuation of COS VI, numismatic debates persist regarding the exact sequencing of the Parthica Capta coinage. Bernhard Woytek's comprehensive corpus of Trajanic coinage (MIR 14) situates issues bearing the title Parthicus in Trajan's obverse titulature within the terminal phases of the reign, linking specific reverse legends like PARTHICA CAPTA and PARTHIA CAPTA directly to the fall of Ctesiphon and Seleucia in AD 115-116. However, under the specific classification of RIC 324, the type is defined by the exact combination of the laureate, draped, and cuirassed bust right, the obverse legend terminating in PARTHICO, and the reverse legend combining the consular titles with PARTHICA CAPTA. Closely related varieties include companion denarii bearing the same legends and reverse imagery, as well as aurei where Trajan's bust is laureate only or displayed with drapery alone, which are distinguished under separate catalogue numbers in both RIC and MIR.

Circulation, Hoarding, and Survival

As an aureus struck from high-purity gold, RIC II Trajan 324 circulated primarily as a store of wealth and an instrument of large-scale commercial or state exchange, experiencing far lower velocity than daily base-metal or silver denominations. Gold coins were carefully guarded against clipping, wear, and attrition, and frequently found their way into long-term savings deposits and institutional reserves. Hoards containing late Trajanic aurei have been discovered both within the territorial boundaries of the Roman Empire, such as in Italy, the Rhine-Danube frontier regions, and the eastern provinces, as well as beyond the frontiers, where Roman gold served as diplomatic subsidies, tribute, or trade payments for luxury goods. Because Trajan's gold standard remained relatively stable compared to the severe debasements of the third century AD, aurei of this period were frequently hoarded during subsequent political and monetary crises or melted down during later monetary reforms under the Severan emperors and their successors. As a consequence, surviving specimens of RIC II Trajan 324 are relatively scarce, valued in modern numismatics for their artistic merit and historical testimony to Rome's furthest eastern expansion.

References

1. RIC II Trajan 324 (aureus) in Online Coins of the Roman Empire. Type ric.2.tr.324_aureus
2. The Roman Imperial Coinage: Volume II: Vespasian to Hadrian. p. 267, no. 324
3. Untersuchungen zur romischen Reichspragung des zweiten Jahrhunderts, Teil I: Die Reichspragung zur Zeit des Traian. Teil I, Traian, Parthica Capta types
4. Die Reichspragung des Kaisers Traianus (98-117), Moneta Imperii Romani 14. MIR 14, issues of AD 114-116