Trajan Gold Aureus RIC II Trajan 309

Monetary and Historical Context

During the final four years of Trajan's reign (AD 114 to 117), the imperial monetary system functioned at peak production to support large-scale military mobilization in the East. Following the conquest of Dacia in AD 106, which had introduced immense quantities of bullion into the imperial treasury, Rome experienced temporary fiscal stability. However, renewed territorial expansion against Parthia necessitated substantial gold expenditures. The gold aureus served as the foundational accounting anchor and high-value transactional vehicle of the empire, alongside the silver denarius. The issue designated as RIC II Trajan 309 represents a commemorative and functional gold emission struck to celebrate Trajan's ongoing martial triumphs. In late AD 114, following significant maneuvers in Armenia and the Caucasus, the Roman Senate granted Trajan the title of Optimus, which was rapidly integrated into his coinage legends. Around the same period, Trajan was acclaimed Imperator for the seventh time (Imperator VII), an event this specific coin type immortalizes. By issuing this aureus, the imperial administration tied high-value gold currency directly to the legitimacy and victory of the princeps during an active theater of war.

Production Standards and Mint Attribution

The entire regular series of RIC II Trajan 309 is attributed to the primary imperial mint at Rome. Although Trajan and his immediate entourage were present in the eastern provinces directing the Parthian campaign, stylistic and die-axis analyses confirm that the vast majority of official gold and silver continued to be produced centrally in the capital. The mint of Rome possessed the institutional capacity, expert engravers, and administrative apparatus required to maintain precise metallurgical controls. Under Trajan, the gold aureus followed the reduced standard established by Nero in AD 64, struck at approximately 1/45th of a Roman pound (libra). This theoretical target corresponded to an average weight of roughly 7.28 grams, with observed surviving specimens of this general emission usually clustering between 7.15 and 7.35 grams. Metallurgical analyses of contemporary Trajanic aurei indicate an exceptionally high degree of gold fineness, consistently exceeding 98 to 99 percent purity. The production utilized carefully prepared, rounded gold blanks struck with hardened iron dies aligned predominantly in an upright or inverted vertical orientation (six or twelve o'clock die axis).

Obverse Iconography

The obverse of RIC II Trajan 309 presents an authoritative bust of Trajan facing right. He is rendered laureate, wearing a civic wreath of laurel leaves tied at the back of the head with ribbons extending down his neck, combined with detailed drapery and a cuirass. Engravers of the late Trajanic period abandoned the more youthful, idealized traits seen earlier in the reign in favour of a powerful, mature physiognomy marked by strong planar facial features, a firm jawline, and straight, combed-forward hair characteristic of the Optimus Princeps portrait series. The cuirass and paludamentum (military cloak) visible at the base of the neck emphasize Trajan's active role as commander-in-chief in the field. The bust is encircled by a continuous border of dots, framing the finely engraved peripheral inscription.

Reverse Iconography and Composition

The reverse of the type features a complex figural composition representing an imperial adlocutio or assembly. Trajan is shown seated rightwards upon a curule chair positioned atop a low wooden or stone platform (suggestum). He is accompanied on the platform by two officers standing behind him, typically identified as praetorian prefects or senior military legates. Standing on the ground level in front of the platform are four Roman legionaries or guardsmen facing left toward the emperor. The foremost soldiers are depicted listening intently, holding spears and military standards (signa). This multi-figure arrangement was a tour de force for the Rome mint's die cutters, who managed to engrave seven individual human figures, weapons, and architectural furnishings within the diminutive field of a gold blank roughly twenty millimeters in diameter. The imagery conveys imperial maiestas, mutual loyalty between the emperor and his legions (fides exercituum), and the direct exercise of military command that secured his latest victory.

Epigraphic Features and Inscriptions

The inscriptions on RIC II Trajan 309 are essential for dating and imperial messaging. The obverse legend reads IMP TRAIANO OPTIMO AVG GER DAC P M TR P, an abbreviation of Imperatori Traiano Optimo Augusto Germanico Dacico, Pontifici Maximo, Tribunicia Potestate. Uniquely beginning in the dative case (Imp. Traiano Optimo), this formula mirrors monumental inscriptions of the era where coin issues were presented conceptually as dedications to the best of emperors. It lists his major victorious cognomina, Germanicus (awarded in AD 97) and Dacicus (awarded in AD 102), alongside his titles of chief priest (Pontifex Maximus) and possessor of tribunician power (Tribunicia Potestas). The reverse carries the terse legend IMPERATOR VII, either across the field or in the exergue, celebrating his seventh imperial salutation. Unlike earlier issues, this reverse omits elaborate honorific titles to focus entirely on the military milestone, reinforcing the visual narrative of the soldiers saluting their victorious imperator.

Typology and Chronological Classification

In the standard classification of Roman Imperial Coinage, this coin is catalogued as RIC II 309 under the reign of Trajan, forming part of his sixth and final major emission phase. In Bernhard Woytek's modern corpus, Die Reichsprägung des Kaisers Traianus, the type falls within the broad chronological horizon of late AD 114 to early 116 (Woytek type group 510). Trajan was acclaimed Imperator VII in late AD 114 after early successes in the Armenian theater, prior to receiving subsequent salutations (Imperator VIII and IX) in AD 115 and 116 during the crossing of the Tigris and the capture of Ctesiphon. Minor stylistic die varieties exist within this type, particularly concerning the exact drapery arrangements over the cuirass, the precise spacing of the reverse figures, and whether the reverse legend is arranged in the upper field or placed neatly within the exergual segment beneath the ground line. The type was superseded later in AD 116 by issues commemorating further salutations and the ultimate assumption of the title Parthicus.

Circulation, Hoard Evidence, and Survival

Due to their substantial intrinsic worth, Trajanic aurei did not circulate in the casual, daily market transactions of ordinary provincial life. Instead, they were employed for high-value remittances, including donatives distributed to soldiers at military assemblies like the one depicted on this reverse, state contracts, and inter-regional commerce. Because gold coins of this standard possessed an exceptionally reliable intrinsic purity, they tended to be carefully conserved and frequently hoarded. Specimens of RIC II Trajan 309 have appeared in hoards dispersed across the European frontiers, Italy, and the Near East, occasionally showing modest wear from decades of secondary circulation before final concealment during subsequent crises in the second or third centuries. Compared to common Trajanic denarii, the survival rate of this aureus type is limited, making it an essential numismatic record of Roman military pageantry at the territorial zenith of the empire.

References

1. The Roman Imperial Coinage, Vol. II: Vespasian to Hadrian. p. 266, no. 309
2. Online Coins of the Roman Empire: RIC II Trajan 309. RIC II Trajan 309
3. Untersuchungen zur römischen Reichsprägung des zweiten Jahrhunderts, Teil I: Die Reichsprägung zur Zeit des Traian. pp. 154-156
4. Die Reichsprägung des Kaisers Traianus (98-117) (MIR 14). Type Group 510