Caracalla Silver Antoninianus RIC IV Caracalla 291C

Monetary Context and the Antoninianus Innovation

The introduction of the silver denomination modern numismatists term the antoninianus was one of the most consequential monetary reforms of the Severan dynasty. In early AD 215, Caracalla authorized the production of a new silver coin distinctly marked by the radiate crown for the emperor and a crescent beneath the bust for the Augusta. In ancient legal and documentary sources, the denomination's formal name remains uncertain, though modern convention has long applied the designation 'antoninianus' based on an ambiguous reference in the Augustan History. Economically, the piece functioned as a double denarius. Despite its formal face value equivalent to two standard silver denarii, metrological and chemical assays demonstrate that the antoninianus was struck at a theoretical weight averaging approximately 5.0 to 5.3 grams, which was roughly one and a half times the weight of the contemporary denarius of roughly 3.1 to 3.3 grams. Furthermore, the silver fineness of the denomination matched or slightly undercut the prevailing Severan standard of roughly fifty to fifty-two percent purity. By setting an artificial legal tariff of two denarii upon a piece containing the precious metal content of only one and a half, the imperial administration instituted an institutionalized overvaluation of approximately twenty-five percent. This maneuver generated a lucrative profit margin for the state, allowing the treasury to stretch diminished silver bullion stocks during a period characterized by escalating military stipends, lavish accession donatives, and costly construction initiatives. Type RIC IV Caracalla 291C represents the terminal phase of Caracalla's initial run of this new denomination before its initial suspension shortly after the brief subsequent reign of Macrinus.

Production Standards and Mint Attribution

Type RIC IV Caracalla 291C is securely attributed to the imperial mint at Rome, which served as the primary administrative and technical hub for the empire's precious metal coinage. While provincial mints such as Antioch and eastern branch workshops periodically struck silver to support regional military operational funds, the stylistic coherence, flan preparation, and administrative epigraphy of this series firmly align with the capital workshop. Production of the antoninianus employed specialized dies cut with the radiate crown to ensure immediate visual differentiation from the laurel-wreathed denarius. Struck from heated cast flans, the coin reflects the mass-production standards characteristic of the later Severan administration. The mint was organized into distinct officinae (workshops), each tasked with striking specific reverse typologies tied to the emperor's official titles and religious pledges. Silver blanks for this issue were prepared using a standardized argentiferous alloy, frequently refined with significant proportions of copper to achieve the target fineness. Die alignment for Rome during this period predominantly followed a regular six-o'clock or twelve-o'clock axis, although slight rotational deviations were common in rapid-paced striking operations.

Obverse Portraiture and Royal Iconography

The obverse of RIC IV Caracalla 291C displays a mature portrait of Caracalla, radiate, draped, and cuirassed, facing right. The radiate solar crown served as both an explicit denomination marker and an elevated divine symbol, traditionally linking the ruler to the celestial radiance of Sol Invictus. In the context of the Severan monetary hierarchy, the radiate crown functioned as a visual shorthand denoting a double unit, paralleling the radiate crown used on copper dupondii to distinguish them from laurel-wreathed asses. Iconographically, the portrait reflects the grim, militaristic realism adopted by Caracalla in his later years. The facial features present a furrowed brow, intensely set gaze, and short, tightly curled beard characteristic of his soldier-emperor self-presentation. The inclusion of military attire, specifically the cuirass overlaid with a paludamentum or military cloak, directly emphasized the emperor's primary role as supreme military commander at a time when he was campaigning in the eastern provinces against the Parthian Empire.

Reverse Iconography of Serapis

The reverse design presents the deity Serapis seated facing left upon a throne. Serapis wears a cylindrical modius or polos atop his head, an attribute denoting divine abundance, fertility, and agrarian bounty. In his raised or extended right hand, the deity holds ears of corn, while his left hand rests upon a tall upright sceptre, the conventional emblem of divine majesty and cosmic sovereignty. Caracalla exhibited a profound personal devotion to Serapis, heavily influenced by the deity's celebrated healing sanctuary at Alexandria, which the emperor visited in AD 215. The deity had long bridged Hellenistic Greek, traditional Egyptian, and broader Roman religious practices, serving as a patron of prosperity, health, and imperial protection. On the imperial coinage of AD 217, the invocation of Serapis combined personal imperial thanksgiving for physical preservation with a political prayer for divine favor during the ongoing Parthian hostilities. The seated posture mirrors traditional classical representations of enthroned supreme deities such as Jupiter, effectively assimilating Serapis into the highest tier of the imperial pantheon.

Epigraphic Formulae and Titulature

The inscriptions of RIC IV Caracalla 291C provide decisive chronological and political evidence for the emission. The obverse legend reads ANTONINVS PIVS AVG GERM. In this formula, ANTONINVS invokes the imperial succession adopted from the Antonine dynasty, while PIVS underlines traditional dutiful piety toward both the gods and the dynastic founder Septimius Severus. AVG abbreviates Augustus, confirming supreme imperial authority, and GERM represents Germanicus Maximus, the military cognomen ex virtute assumed in AD 213 following campaigns against Germanic confederacies along the Rhine and Danube frontiers. The reverse legend carries the official sequence of imperial offices: P M TR P XX COS IIII P P. The title Pontifex Maximus (P M) establishes his leadership over the Roman state religion. TR P XX records the renewal of his tribunician power for the twentieth time, which commenced on 10 December AD 216 and would have terminated in December AD 217 had the emperor survived. COS IIII marks his fourth consulship, assumed in AD 213, while P P (Pater Patriae) reflects the honorific title of Father of the Fatherland. The inclusion of the twentieth tribunician year restricts the striking of this issue strictly to the opening months of AD 217.

Typology and Chronological Placement

Within the typology established by Harold Mattingly and Edward A. Sydenham in The Roman Imperial Coinage, type 291 encompasses several distinct reverse variants sharing the twentieth tribunician formula of AD 217. Subtype 291C is specifically differentiated by the seated presentation of Serapis holding corn ears and a sceptre, paired with the radiate, draped, and cuirassed obverse bust. Other parallel emissions of the twentieth tribunician year feature standing figures of Serapis, Sol, or Jupiter, or depict alternate seated deities. Because Caracalla's twentieth tribunician term began on 10 December AD 216 and ended with his assassination near Carrhae on 8 April AD 217, the production window for this type was exceptionally brief, spanning less than four full months. This narrow window positions RIC IV Caracalla 291C as part of the very last series of antoniniani authorized during Caracalla's life. Following his death, his successor Macrinus curtailed production of the denomination, leaving these early issues as a self-contained chronological and metallurgical horizon.

Circulation, Hoard Contexts, and Economic Legacy

Despite the restricted striking period of the AD 217 issues, RIC IV Caracalla 291C circulated alongside both early antoniniani of AD 215 to 216 and the vast ocean of earlier Severan denarii. Archaeological evidence from European and Near Eastern hoards indicates that the public initially resisted the overvalued denomination, resulting in widespread hoarding of older, purer denarii in accordance with Gresham's law. Nevertheless, because Caracalla's military forces were heavily paid in newly struck coin, these antoniniani moved swiftly through garrison hubs along the Danube and the Syrian frontier. In hoards deposited across the western provinces and the Balkan frontier, such as those buried during the Gothic incursions of the mid-third century, antoniniani of Caracalla are frequently found in worn condition, indicating sustained commercial utility long after the emperor's demise. The coin type stands as an early representative of the debased fiduciary system that ultimately dominated Roman monetary circulation throughout the third-century crisis.

References

1. Money and Government in the Roman Empire. pp. 218-223
2. Coinage in the Roman Economy, 300 B.C. to A.D. 700. pp. 125-135
3. The Roman Imperial Coinage, Volume IV, Part I: Pertinax to Geta. p. 257, no. 291
4. Online Coins of the Roman Empire: RIC IV Caracalla 291C. ric.4.crl.291C