Trajan Gold Aureus, RIC II Trajan 113

Monetary Context and Imperial Policy

During the reign of Trajan (AD 98-117), the Roman imperial monetary system continued to rely on the bimetallic and trimetallic structure established under Augustus and recalibrated during Nero's reform in AD 64. The gold aureus functioned as the primary store of high value and the principal vehicle for major military distributions, diplomatic subsidies, and large-scale fiscal operations. Following Trajan's victorious campaigns in the First Dacian War (AD 101-102) and Second Dacian War (AD 105-106), vast quantities of bullion were captured and transported from the Dacian royal treasuries to Rome. This massive influx of precious metal allowed the imperial administration to sustain an ambitious program of public monuments, civic subsidies such as the alimentary foundations, and extensive reminting programs. Within this broader economic environment, RIC II Trajan 113 was struck during Trajan's fifth consulship, which commenced in AD 103 and extended through AD 111 before he assumed his sixth consulship in AD 112. The issue illustrates how gold coinage was deployed not simply as bullion, but as a deliberate ideological instrument. While the silver denarius met the day-to-day transaction needs of soldiers and provincial commerce, the aureus circulated widely among senators, senior legionary officers, and international merchants. As such, the selection of Jupiter Conservator or Capitolinus for the reverse imagery of RIC II Trajan 113 conveyed imperial legitimacy and divine patronage to the highest echelons of the Roman world, assuring stakeholders that the empire's territorial and material expansion rested upon the sustained favor of the supreme deity.

Production Standards and Mint Operation

The entire production run of RIC II Trajan 113 is attributed to the central imperial mint at Rome, which held a virtual monopoly on regular gold coinage during this phase of the High Empire. Trajanic gold issues adhered strictly to the weight standard instituted by Nero in AD 64, which fixed the theoretical weight of the aureus at 1/45th of a Roman pound (libra), yielding an expected standard of approximately 7.28 grams. Surviving specimens across this general type series typically cluster between 7.15 and 7.35 grams, displaying tight weight tolerances that reflect meticulous quality control by the mint magistrates and technical staff. Production at the Rome mint involved highly organized ateliers (officinae). Gold blanks were cast in spherical or flat-bottomed moulds and carefully adjusted to the statutory weight before striking. The coin dies were meticulously engraved in hard bronze or iron by experienced die-cutters, who executed refined classical modeling characteristic of the Trajanic style. Die orientation was predominantly regular, adhering to a strict six o'clock (or occasionally twelve o'clock) alignment, which was standard practice for contemporary precious metal issues. Metallurgical analyses of early second-century Roman aurei consistently reveal gold fineness exceeding 98 to 99 percent, confirming that imperial authorities took extraordinary measures to maintain the intrinsic integrity of gold currency despite sporadic debasements observed in contemporary silver denarii.

Obverse Portraiture and Iconography

The obverse of RIC II Trajan 113 displays an idealized, mature portrait of Trajan facing right. The emperor is depicted wearing the laurel wreath of victorious leadership, secured at the back of the head with tied ribbons (taeniae) falling along the nape of the neck. The portraiture belongs to the celebrated 'decennalia' and mid-reign stylistic phase, characterized by sharp facial planes, a firm jawline, a prominent straight nose, and hair brushed forward in straight, orderly strands across the forehead, evoking early Julio-Claudian classicism while retaining an air of soldierly resolve. Variations in the bust truncation exist across documented dies of this type. The standard typology features a draped bust, with fabric folds gathered smoothly over the chest and shoulders, though specific dies present drapery predominantly visible on the left shoulder while leaving the neck and clavicle exposed. These subtle variations demonstrate the handiwork of distinct die-cutters within the Rome mint rather than intentional shifts in imperial iconography. The portrait is harmoniously framed by the continuous legend, which begins in the lower left and follows the curve of the beaded border, creating a balanced and imposing imperial presentation.

Reverse Iconography: Jupiter Seated

The reverse of RIC II Trajan 113 is dedicated to an iconic depiction of Jupiter, the supreme god of the Roman pantheon. The deity is shown seated facing left upon a simple backless stool or curule chair. Jupiter is portrayed bare-chested with drapery (himation) wrapped around his lower limbs, leaving his muscular torso exposed in classic Hellenistic fashion. In his extended right hand, he cradles a small winged Victory (Victoria), who faces inward toward the god, holding a wreath or palm branch. In his left hand, Jupiter grasps a tall, vertical sceptre resting on the groundline. This reverse composition operates on multiple symbolic layers. By holding Victory, Jupiter is framed as the ultimate author of Roman triumph, while simultaneously transferring that victorious aura to Trajan. The backless seat recalls the curule chair of Roman magistracy, harmonizing divine authority with Roman civic institutions. The imagery visually asserts that Trajan's military successes, particularly in Dacia, were divinely sanctioned and executed under Jupiter's direct protection. Furthermore, the motif resonates with the traditional vows taken at the Temple of Jupiter Optimus Maximus on the Capitoline Hill, reiterating the reciprocal pact between the Roman state, its ruler, and the gods.

Inscriptions and Epigraphy

The obverse legend of RIC II Trajan 113 reads: IMP TRAIANO AVG GER DAC P M TR P. This formula combines Trajan's military salutation with his formal imperial and religious nomenclature: Imperatori Traiano Augusto Germanico Dacico, Pontifici Maximo, Tribunicia Potestate. The presence of the cognomina devictarum gentium 'Germanicus' (received under Nerva in AD 97) and 'Dacicus' (adopted in late AD 102 following his first campaign) provides a clear chronological terminus post quem, demonstrating that the issue was struck after the formal pacification of the initial Dacian conflict. The reverse legend reads: COS V P P S P Q R OPTIMO PRINC. This expands to Consuli Quinto, Patri Patriae, Senatus Populusque Romanus Optimo Principi. The designation COS V indicates that the issue belongs to Trajan's fifth consulship, which began on January 1, AD 103, and lasted until the conclusion of AD 111. The inclusion of the title 'Optimus Princeps' (Best of Princes) is of paramount historical importance. While this title had been informally used by the Senate and reflected in panegyrics since the early years of Trajan's reign, its formal adoption into official coin inscriptions began around AD 103-104. The formula explicitly credits the Senate and the Roman people with granting this unprecedented civilian honorific, emphasizing harmonious constitutional partnership.

Typology and Chronological Classification

In the standard classification of Roman imperial coinage by Harold Mattingly and Edward A. Sydenham in RIC II, this type is catalogued as Trajan 113. It is distinguished from closely related gold issues primarily by the specific combination of obverse drapery, fifth-consulship legend forms, and the seated Jupiter reverse. In Bernhard Woytek's exhaustive corpus Moneta Imperii Romani (MIR 14), Trajan's fifth-consulship coinage is subdivided into chronological phases based on stylistic evolution, titling adjustments, and portrait features, placing this type in the mid-consulship sequence dating between AD 103 and AD 107/108, prior to the introduction of later Dacian triumph commemorative legend variations. RIC II Trajan 113 forms part of a cohesive series of gold and silver types sharing the COS V P P S P Q R OPTIMO PRINC reverse legend. While parallel reverse types from this emission portray other deities such as Mars, Roma, and Pax, or allegorical personifications like Felicitas and Abundantia, the Jupiter seated type represents the theological core of the issue. Die studies indicate that certain obverse dies used to strike RIC II Trajan 113 were shared with other reverse designs within the fifth-consulship group, underscoring the integrated production structure of the Rome mint workshops during this active coining phase.

Circulation Patterns and Hoard Evidence

As high-denomination gold coins, aurei like RIC II Trajan 113 followed circulation dynamics distinct from contemporary silver and bronze denominations. Gold did not circulate rapidly in small-scale daily retail transactions; instead, it moved through elite networks, interprovincial commerce, and long-term savings deposits. Hoard evidence from Roman Britain, the Rhine frontier, the Danube basin, and the eastern provinces illustrates that Trajanic aurei circulated widely throughout the Mediterranean world and frontier garrisons, where they were accumulated by officers, landowners, and wealthy merchants. Because the gold standard of the Roman Empire remained extraordinarily stable through the first and second centuries AD, aurei of Trajan routinely remained in active circulation for decades, occasionally persisting until the Severan period. Hoard contexts such as the Didcot hoard in Britain or continental hoards from Gaul and Germany frequently show Trajanic aurei mixed with issues of Nero, the Flavians, and the Antonines. Wear patterns on recovered specimens of RIC II Trajan 113 range from nearly mint-state examples buried shortly after issue to moderately worn specimens reflecting long intervals of circulation before final deposition.

References

1. Money and Government in the Roman Empire. pp. 180-210
2. Coins of the Roman Empire in the British Museum, Vol. III: Nerva to Hadrian. pp. 57-61
3. Online Coins of the Roman Empire: RIC II Trajan 113. ric.2.tr.113
4. The Roman Imperial Coinage, Vol. II: Vespasian to Hadrian. p. 254, no. 113
5. Die Reichsprägung des Kaisers Traianus (98-117). Moneta Imperii Romani 14. MIR 14, nos. 152-154