Augustus Gold Aureus, RIC I (second edition) Augustus 186A

Monetary Context and Imperial Policy

Under Augustus, the Roman monetary system underwent an extensive reorganization that established a coherent, bimetallic and trimetallic currency structure designed to meet the fiscal demands of a sprawling empire. Following the closure of the senatorial gold and silver issues at the mint of Rome in the late teens BC, gold and silver production shifted almost exclusively to the western provincial center of Lugdunum. Struck in exceptionally pure gold, the aureus held the nominal tariff of twenty-five silver denarii, one hundred brass sestertii, or four hundred copper asses. It functioned as the supreme store of value within Roman commerce, administrative finances, and state accounting. The issuance of gold aurei such as RIC I (second edition) Augustus 186A was intrinsically connected to the fiscal requirements of the Roman military apparatus. During the period between 11 BC and 10 BC, substantial military campaigns led by Augustus's stepsons, Nero Claudius Drusus and Tiberius, sought the pacification and subjugation of Germanic territories east of the Rhine and the suppression of revolts in Pannonia and Dalmatia. The military treasury required a vast, dependable supply of portable, universally respected currency to pay legionary salaries, fund civil and engineering infrastructure, and distribute donatives. RIC 186A was struck precisely to answer these fiscal and strategic demands, circulating as the highest-denomination medium of imperial prestige and financial stability.

Production and Minting at Lugdunum

The attribution of RIC I (second edition) Augustus 186A to the mint of Lugdunum is supported by extensive hoard data, die-link studies, and historical evidence concerning imperial administration. Established in 43 BC by Lucius Munatius Plancus, Lugdunum occupied an exceptionally advantageous logistical position at the confluence of the Rhone and Saone rivers. This hub allowed ready riverine and terrestrial transport connecting Roman Gaul, the Rhine frontier, and northern Italy. The Lugdunum mint benefited from proximity to wealthy Gallic and Spanish gold and silver mines, as well as an established network of metallurgical artisans. Production of this aureus adhered strictly to the Augustan weight standard of 1/42nd of a Roman pound (libra), yielding an intended theoretical mass of approximately 7.85 to 7.90 grams. High-temperature smelting yielded gold of exceptional fineness, consistently exceeding ninety-eight percent purity. Dies were carved by highly skilled celators whose naturalistic style characterized the imperial master dies of this era. Die alignment for Lugdunum aurei of this series commonly favored an upright or slightly shifted orientation, although manual hammering caused minor variations across surviving specimens. Output was large, as demonstrated by the survival of numerous distinct obverse and reverse die pairings across institutional collections.

Obverse Design and Portraiture

The obverse of RIC I (second edition) Augustus 186A presents the mature, idealized head of Augustus facing right, adorned with a laurel wreath. The portrait displays the classicizing Julio-Claudian aesthetic that replaced the stark, veristic portraiture of late Republican tradition. The features are harmoniously proportioned, depicting Augustus with calm, aristocratic restraint, deep-set eyes, an aquiline nose, and neatly parted, curling locks of hair beneath the laurel leaves. The wreath itself serves as an unambiguous emblem of triumph, divine favor, and the civic restoration celebrated throughout Augustan ideology. The surrounding legend, AVGVSTVS DIVI F, is executed in clean, well-spaced Roman capital letters running clockwise along the beaded border. The simplicity of this legend underscores the princeps's supreme identity: he does not require lengthy enumerations of civil offices or magisterial posts, relying instead on his consecrated cognomen Augustus and his filial relationship to the deified Julius Caesar. The die engraving exhibits fine relief, emphasizing anatomical precision in the rendering of neck musculature and hair texture, which conveyed an image of enduring, unaging authority across the Roman world.

Reverse Iconography: The Butting Bull

The reverse design of RIC 186A depicts a muscular bull charging or butting toward the right. The animal is rendered with dynamic naturalism: its forelegs are firmly planted or flexed as it lunges forward, its head lowered with horns presented toward an unseen adversary, and its tail raised in a dramatic, agitated curve. Below the ground line, or positioned directly in the field, appears the abbreviated epigraphic formula IMP XII. The motif of the butting bull is deeply rooted in Magna Graecia numismatic tradition, famously appearing on classical fourth-century BC staters of Thurium (Thurii) in Lucania. Numismatists and historians have long analyzed the motives behind Augustus's adoption of this imagery. Suetonius recorded that the Octavian family had ancestral connections to Thurium, and that Octavian was mockingly nicknamed 'Thurinus' in his youth. By appropriating this ancient motif on imperial coinage, Augustus transformed a provincial taunt into a noble heraldic badge. Beyond family history, the bull represented raw martial strength, unyielding vitality, and agricultural abundance. In the context of the German and Illyrian campaigns ongoing during the twelfth imperial acclamation, the ferocious, charging beast symbolized the unstoppable advance and steadfast defense of Roman arms on the frontier.

Epigraphic Formulas and Titulature

The inscriptions on RIC I (second edition) Augustus 186A are concise yet loaded with constitutional and religious significance. The obverse formula AVGVSTVS DIVI F stands for Augustus Divi Filius ('Augustus, Son of the Deified [Julius]'). Granted by the Senate in 27 BC, the name Augustus elevated Octavian above ordinary mortals into the realm of religious reverence and sacred sanction. Pairing this with Divi Filius reinforced his status as the adopted son and rightful heir of the deified dictator Divus Iulius, legitimizing his supremacy over the Roman state. The reverse legend IMP XII represents Imperator Duodecimum ('Imperator for the twelfth time'), denoting the emperor's twelfth military acclamation. In Roman constitutional practice, an acclamation as imperator was awarded by soldiers on the battlefield following a decisive victory and subsequently ratified by the Senate. Augustus accumulated these salutations throughout his reign, using them to date his issues and broadcast martial accomplishments. The twelfth acclamation is securely tied by historical sources to victories achieved during 11 BC, notably the campaigns of Drusus along the Rhine and Lippe rivers in Germania, as well as Tiberius's suppression of the Pannonian uprising. The inscription thus served as an unambiguous proclamation of successful imperial leadership and expansion.

Typology and Chronological Sequence

Within the typology of Augustan coinage at Lugdunum, RIC 186A belongs to the substantial 'IMP X' through 'IMP XIV' series struck between approximately 15 BC and 8 BC. The specific pairing of the obverse legend AVGVSTVS DIVI F with the reverse bull butting right and the legend IMP XII defines this precise catalogue entry in the revised Roman Imperial Coinage. The twelfth acclamation commenced in 11 BC following successes in Germania and Pannonia and was superseded by the thirteenth acclamation (IMP XIII) in or around 9 BC. Consequently, RIC 186A is chronologically constrained to the operational period between 11 BC and 10 BC. The type is closely paralleled by contemporary silver denarii bearing identical obverse and reverse schemes (catalogued under RIC 187A). It must be distinguished from companion issues within the same acclamation series, such as those where the bull charges to the left (RIC 186B), or those with alternate obverse bust breaks and portrait styles. Furthermore, earlier issues of 15 BC to 12 BC celebrated the tenth and eleventh acclamations with diverse reverse types, such as Apollo of Actium or Roman soldiers presenting laurels to the emperor. RIC 186A represents the golden apex of the twelfth-acclamation cycle, capturing the exact transition toward standardized bull imagery that would recur periodically at Lugdunum.

Circulation, Hoard Evidence, and Economic Role

Aurei of the Lugdunum mint were struck in vast quantities to satisfy imperial fiscal payments, and RIC 186A saw widespread circulation throughout the Roman provinces and along the militarized border zones. Because gold coinage was rarely used in day-to-day retail transactions, these aurei moved primarily among high-ranking military officers, wealthy merchants, regional tax collectors, and state administrative offices. Substantial hoard evidence across western Europe, including deposits in modern France, Germany, Britain, and northern Italy, documents that Augustan aurei remained in active circulation for decades. Many specimens continued to circulate well into the Julio-Claudian and Flavian eras, only gradually being withdrawn, melted down, or re-tariffed as subsequent emperors, particularly Nero in AD 64, adjusted the gold weight standard downward. In frontier regions beyond the Rhine and Danube, aurei were frequently channeled as diplomatic subsidies, trade payments for raw materials, or spoils of war. The sturdy physical preservation of surviving specimens in modern public and private cabinets reflects both the intrinsic durability of high-carat gold and the careful hoarding behavior practiced by ancient owners seeking to preserve their capital during turbulent political periods.

References

1. Coins of the Roman Empire in the British Museum, Volume I: Augustus to Vitellius. Lugdunum, no. 468
2. Catalogue des monnaies de l'Empire romain, I: Auguste (3e édition). nos. 1428-1430
3. Online Coins of the Roman Empire: RIC I (second edition) Augustus 186A. ric.1(2).aug.186A
4. The Roman Imperial Coinage, Volume I: From 31 BC to AD 69 (Revised Edition). p. 52, no. 186A