Trajan Gold Aureus, RIC II Trajan 143

Monetary Context and Imperial Policy

The gold aureus occupied the pinnacle of the Roman imperial monetary system, acting as an indispensable vehicle for high-value transactions, state donations, military disbursements, and inter-provincial treasury transfers. Following the monetary reform enacted under Nero in 64 AD, the aureus was struck at 45 to the Roman pound, establishing a theoretical standard around 7.28 grams of near-pure gold. Trajan maintained this standard with high metallurgical consistency throughout his reign. The issuance of gold coinage under Trajan functioned not only as an economic foundation for the vast expenses of state administration and civil building projects, but also as a premier medium for ideological communication. New territorial acquisitions were routinely announced and legitimized through coordinated gold and silver issues. The annexation of the Nabataean kingdom in 106 AD transformed a vital commercial buffer zone into the Roman province of Arabia Petraea, securing crucial caravan routes linking the Red Sea, the Levant, and Mesopotamia. RIC II Trajan 143 was produced within this ideological framework, celebrating the expansion of the empire's boundaries and the integration of novel frontier resources into the Roman orbit.

Production and Mint Organization

All regular imperial aurei of this series were manufactured at the central mint in Rome, which operated under strict administrative supervision near the center of imperial governance. The mint was organized into specialized workshops, or officinae, operating under the direction of the procurator monetae. Die cutters in Rome achieved remarkable technical skill during the middle years of Trajan's reign, producing balanced, high-relief portraits with refined naturalistic proportions. Striking gold required meticulous preparation of blanks, which were cast to precise weight specifications and carefully weighed before entering the die-striking stations. RIC II Trajan 143 is distinguished by its obverse die orientation showing the emperor facing left rather than the standard right-facing posture common to the vast majority of Trajan's aurei. Left-facing portraits appear in limited frequency across Roman gold emissions and are traditionally interpreted as intentional variations produced by particular engravers or specific officinae rather than accidental production aberrations.

Obverse Iconography and Style

The obverse presents the laureate head of Trajan oriented to the left. The bust truncation terminates cleanly at the neck, devoid of drapery or cuirass. Trajan's portraiture in this phase reflects the established decennalia and middle-period stylistic formula, characterized by a firm jaw, straight profile, deep-set eye, and neatly combed straight locks of hair brushed forward across the brow in the classic manner of his principate. The laurel wreath sits securely upon the crown, its ties falling along the nape of the neck. The leftward orientation of the head offers a striking aesthetic contrast to the dominant rightward imperial profiles of the period. Surrounding the portrait, the inscription begins on the lower left and follows the perimeter clockwise, precisely spaced to frame the imperial likeness without crowding.

Reverse Iconography and Attributes

The reverse iconography centers on the personification of Arabia, shown as a draped female figure standing facing left. Her right hand extends forward holding an aromatic branch over a miniature dromedary camel that walks leftward at her feet. In her left hand, she holds an upright bundle identified in traditional numismatic scholarship as cinnamon sticks or aromatic frankincense reeds. These attributes explicitly identify the province through its defining geographic and economic characteristics: the dromedary camel represents caravan transport and desert terrain, while the branch and bundle signify the lucrative incense and spice trade routes that passed through Nabataean territory from southern Arabia. The composition conveys both imperial submission and commercial enrichment, celebrating Arabia's incorporation as a pacified, wealth-generating province under Trajan's stewardship.

Epigraphy and Imperial Titles

The obverse legend reads IMP TRAIANO AVG GER DAC P M TR P, presenting Trajan's titles in the dative case (Imperatori Traiano Augusto Germanico Dacico Pontifici Maximo Tribunicia Potestate), which presents the coin as a dedicatory honor offered to the emperor by the Roman state. The victory titles Germanicus and Dacicus attest to his triumphant campaigns along the Rhine and Danube, the latter acquired following the conclusion of the First Dacian War in 102 AD. The reverse legend continues this grammatical dedication: COS V P P S P Q R OPTIMO PRINC (Consuli Quinto, Patri Patriae, Senatus Populusque Romanus Optimo Principi). This records Trajan's fifth consulship, which commenced in 103 AD, his status as Father of the Country, and the formulaic decree of the Senate and People of Rome honoring him as the Best of Princes. The absence of an explicit mention of tribunician renewal numbers or Dacicus Maximus reflects the standard epigraphic convention of Trajan's fifth consular issue prior to his sixth consulship in 112 AD.

Typology and Chronological Classification

In the standard classification established by Harold Mattingly and Edward A. Sydenham in Roman Imperial Coinage, volume II, this specific aureus is catalogued under number 143. Its reverse corresponds closely to contemporary denarii and sestertii celebrating Arabia, notably the issues carrying the legend ARAB ADQ or ARABIA ADQUISITA. However, on the aureus type RIC 143, the reverse legend maintains the standard Optimo Principi formula rather than a direct geographical exergual label, relying entirely on the visual attributes of Arabia and the camel to convey the geographic message. Chronologically, while Trajan entered his fifth consulship on January 1, 103 AD and did not assume his sixth until January 1, 112 AD, the annexation of Arabia occurred in 106 AD under the governor of Syria, Aulus Cornelius Palma Frontonianus. Numismatists, including Bernhard Woytek in his master corpus MIR 14, date the introduction of the Arabia reverse types to the period from late 106 to 111 AD, narrowing the historical window of manufacture within the broader COS V epigraphic interval.

Circulation Patterns and Monetary Role

Aurei of Trajan enjoyed extensive circulation across the Roman Empire, although their high intrinsic purchasing power meant they circulated within restricted fiscal circuits compared to base-metal and silver denominations. An individual aureus represented twenty-five silver denarii or one hundred sestertii, an amount roughly equivalent to a month of military wages or significant wholesale purchases. Gold pieces were routinely hoarded during times of geopolitical or personal insecurity, which accounts for their survival in well-preserved states across modern archaeological contexts in Italy, the Balkans, and Western Europe. Aurei issued with eastern conquest motifs also moved eastward with military commands and civil administrators. The left-facing portrait variety of RIC 143 remains noticeably scarcer in surviving hoards and public collections than its right-facing counterpart, indicating a more constrained initial mintage during the COS V emission phase.

References

1. Coins of the Roman Empire in the British Museum, Volume III: Nerva to Hadrian. pp. 61-62
2. Online Coins of the Roman Empire: RIC II Trajan 143. ric.2.tr.143
3. The Roman Imperial Coinage, Volume II: Vespasian to Hadrian. p. 254, no. 143
4. Die Reichspragung des Kaisers Traianus (98-117) (Moneta Imperii Romani 14). nos. 293-294