Aurelian Antoninianus RIC V Aurelian 255

Monetary Context and the Third-Century Radiate

The antoninianus, or double denarius, formed the core of Roman silver transactions throughout the mid-third century AD. By the accession of Aurelian in late AD 270, decades of military crises, regional secessions, and escalating fiscal obligations had reduced the silver content of the denomination from its early third-century standard of roughly fifty percent to an alloy containing barely two to three percent precious metal. The coins were fundamentally bronze or potin blanks finished with a fleeting surface enrichment or dipping process designed to impart a temporary silvery sheen. In late AD 274, Aurelian initiated an empire-wide reform to restore confidence in the base coinage, adjusting weight standards and introducing the clear tariff mark XXI or KA, which signaled an alloy containing twenty parts base copper alloy to one part silver. Type RIC V Aurelian 255 belongs within the numismatic sequence of this tumultuous five-year reign, capturing the transitional metallurgic environment where massive quantities of radiate pieces were struck across provincial mint networks to stabilize state payments and military expenditures.

Production and the Siscia Mint

Type RIC V Aurelian 255 was produced exclusively at the mint of Siscia, modern Sisak in Croatia. Situated strategically along the Sava River in Pannonia Superior, Siscia served as one of the preeminent military mints of the Illyrian emperors, providing ready currency to the legions stationed along the Danube frontier. Established earlier under Gallienus, the workshop expanded under Claudius II Gothicus, Quintillus, and Aurelian into a highly structured facility organized into numbered or lettered workshops known as officinae. Production methods at Siscia relied on standard ancient striking procedures: cast flans were prepared, heated, and struck between hand-held upper reverse dies and fixed lower obverse dies. While Siscia struck antoniniani across several distinct emissions during Aurelian's reign, workshop output was marked by characteristic regional die-cutting styles, notable for sharply rendered cuirasses, neat lettering, and consistent mechanical fabric.

Obverse Iconography and Imperial Portrayal

The obverse of RIC V Aurelian 255 presents a right-facing bust of Aurelian wearing a radiate crown and military cuirass. The radiate crown serves as the conventional numismatic indicator of the double denarius denomination, visually linking the living princeps to the solar deity. The cuirassed bust emphasizes the emperor's active role as supreme commander, reflecting the martial ethos that defined the Illyrian soldier-emperors. In the style of the Siscia mint, portraiture displays a lean, resolute profile with a cropped beard, prominent nasal bridge, and tightly combed hair beneath the solar rays. Rather than an idealized classical monarch, the image conveys stern soldierly vigilance, reinforcing the emperor's authority over the Danubian and Balkan legions whose support was paramount to imperial survival.

Reverse Iconography: Sol and Captives

The reverse composition illustrates Sol Invictus, the Unconquered Sun, stepping vigorously toward the left. The deity wears a radiate crown, lifts his right hand in an authoritative gesture of pacification and power, and holds a scourge or whip in his lowered left hand. Seated or crouched at his feet on either side are two bound captives, their bowed postures symbolizing defeated enemies of the state. This visual scheme is one of the most celebrated allegories of Aurelian's reign, directly commemorating the subjugation of the Palmyrene kingdom under Zenobia and Vaballathus in AD 272 to 273. The whip represents divine chastisement and solar dominion, while the raised hand expresses the dawn of a new order. Sol had long been venerated by Aurelian, who elevated the deity to supreme patron of the Roman realm and established the temple of Sol in Rome, making this image a theological as well as political statement.

Epigraphy and Legend Readings

The obverse inscription reads IMP C AVRELIANVS AVG, abbreviating Imperator Caesar Aurelianus Augustus. This concise titulature asserts absolute supreme command, dynastic legitimacy through Caesar, and the sovereign majesty of Augustus. The reverse bears the legend ORIENS AVG, translating as 'The Rising Sun of the Augustus' or 'The East of the Emperor.' This double-edged legend played on both the celestial rising of the sun and the geographical recovery of the Roman East from Palmyrene dominion. Epigraphically, Siscia produced neat, regular lettering with distinct triangular serifs on capital letters. Depending on the specific emission and officina within the series, subsidiary control marks such as Greek or Latin numerals and workshop symbols were placed in the exergue to monitor bullion consumption and die accountability across the mint.

Typology and Chronological Placement

In the standard reference corpus Roman Imperial Coinage, volume five, part one, Percy H. Webb catalogued this specific Siscia emission under entry 255. Within the broader framework of Aurelian's coinage, modern scholars such as Sylviane Estiot have refined the chronological arrangement of the Siscia mint into distinct chronological phases spanning AD 270 to 275. The ORIENS AVG reverse with Sol and two captives was introduced following Aurelian's eastern campaigns and continued across successive emissions, appearing both before and after the monetary reform of late AD 274. While earlier pre-reform strikings lacked the XXI tariff mark, later reform issues incorporated the value sign alongside specific officina notations. RIC V Aurelian 255 classifies this design specifically for the radiate, cuirassed obverse bust at Siscia, occupying an intermediate place within the evolving Danubian typological sequence.

Hoard Evidence and Monetary Circulation

Radiate coins of Aurelian struck at Siscia circulated widely along the military corridors of Pannonia, Moesia, Dacia, and northern Italy, but they also moved through commercial channels into Western Europe and the Balkans. Siscia was among the most productive mints under Aurelian, and its output routinely appears in major third-century hoards, including the Normanby Hoard in Britain and the La Venelia Hoard in Italy. Hoard patterns reveal that despite the technical differences between pre-reform and post-reform radiates, earlier antoniniani often remained in general circulation alongside reformed pieces until the systemic currency overhauls of Diocletian in AD 294 to 296, demonstrating the practical continuity of billon transactions across the Roman world.

References

1. The Normanby Hoard and Other Roman Coin Hoards. pp. 114-150
2. Monnaies de l'Empire romain, XII.1: D'Aurelien a Florien (270-276 apres J.-C.). Siscia emissions
3. Coinage in the Roman Economy, 300 B.C. to A.D. 700. pp. 140-155
4. Online Coins of the Roman Empire: RIC V Aurelian 255. ric.5.aur.255
5. The Roman Imperial Coinage, Volume V, Part I. p. 288, no. 255