Caracalla Bronze Sestertius RIC IV Caracalla 538B

Monetary Context and Denominational Function

By the reign of Caracalla, the sestertius retained its traditional status as the principal large-denomination base-metal coin of the Roman Empire, functioning as a vital reckoning unit and a cornerstone of daily civic transactions. Valued at one-quarter of a silver denarius or four copper asses, the sestertius had long served as the heavy workhorse denomination for state disbursements, market commerce, and tax payments. The broader Severan monetary environment was defined by significant inflationary pressures, rising military pay, and progressive debasement of the precious-metal coinage. While Caracalla introduced the double denarius or antoninianus around AD 215 to alleviate fiscal demands on the treasury, the production of aes coinage continued under the traditional senatorial authority indicated by the letters S C (senatus consulto). Sestertii struck in this period reflect a modest contraction in total volume relative to the height of the second century, yet they remained an indispensable vehicle for high-relief imperial portraiture and detailed religious imagery. Large flans offered the administration an ideal medium for broadcasting politically sensitive programmatic themes, including the health of the emperor and the stability of the empire.

Production Standards and Mint Organization

The entire verified emission of RIC IV Caracalla 538B was produced by the imperial mint in Rome, which operated centralized workshops (officinae) dedicated to the cutting of dies and the striking of bronze denominations alongside silver and gold issues. Sestertii of the middle Severan era were struck on cast flans made of copper alloy, predominantly brass (orichalcum), though metallurgical analyses across third-century aes demonstrate an increasing use of leaded bronze and secondary scrap metal. Standard weights for early third-century sestertii typically cluster between 22 and 26 grams with diameters ranging from 30 to 34 millimeters, although striking tolerances allowed notable variance across surviving specimens. Die axes were predominantly aligned in the vertical configuration (six o'clock or twelve o'clock), conforming to the rigorous technical discipline of the Rome mint. Hand-carved dies required skilled celators capable of rendering complex three-dimensional compositions, combining intricate drapery, anatomical modeling, and miniature companion figures on a single working reverse face.

Obverse Iconography and Imperial Portrayal

The obverse of RIC IV Caracalla 538B exhibits a distinctive imperial portrait defined by a mature, bearded bust of Caracalla wearing the laurel wreath of victory and a military cuirass (cuirassed bust seen from the back, facing right). The back-view perspective of the cuirass, showing the dorsal plate, pauldrons, and pteruges, was a favored iconographic posture under the Severan dynasty, emphasizing the ruler's martial vigilance and continuous commander-in-chief readiness. Caracalla's facial features demonstrate the characteristic Severan verism: a furrowed brow, intense gaze, tightly curled hair and beard, and a square jaw conveying determination and sternness. This stylistic departure from the serene, idealized classical portraits of the Antonine era reflected the soldier-emperor ethos that Caracalla actively cultivated. The laurel wreath rests securely on his hair, its ribbons trailing down the nape of the neck, symbolizing both perpetual triumph and sacred imperial authority.

Reverse Iconography: Asclepius, Telesphorus, and the Globe

The reverse design presents a complex mythological tableau centering on Asclepius, the patron god of healing and medical restoration. The god stands facing, draped in a mantle that leaves his torso bare to the waist, with his head turned toward the left. In his right hand, he rests upon a knotty staff around which a sacred serpent is entwined, the primary universal symbol of rejuvenative medicine in the ancient Mediterranean. To the left of Asclepius stands the smaller figure of Telesphorus, his divine son or companion, depicted as a hooded dwarf wrapped in a traditional hooded cloak (cucullus), embodying recovery and convalescence. On the ground to the right rests a globe, representing universal dominion and cosmic harmony. This reverse visual program is intimately tied to Caracalla's personal journey to Pergamum in late AD 214 and 215, where the emperor sought healing at the world-renowned Asclepieion for persistent ailments. By uniting the therapeutic presence of Asclepius and Telesphorus with the globe, the die-engraver underscored that the restoration of the emperor's bodily health was essential for the preservation and security of the entire Roman world.

Epigraphy and Titulature Analysis

The inscriptions on RIC IV Caracalla 538B are strictly regimented according to established Roman bureaucratic formulas. The obverse legend reads M AVREL ANTONINVS PIVS AVG GERM, expanding to Marcus Aurelius Antoninus Pius Augustus Germanicus. Here, Caracalla's formal dynastic adoption of the Antonine name is coupled with the religious epithet Pius, the supreme title Augustus, and the victory title Germanicus, officially awarded following his German campaigns on the Rhine and Danube in AD 213. The reverse inscription reads P M TR P XVIII IMP III COS IIII P P, complemented by the letters S C across the lower fields. This formula abbreviates Pontifex Maximus, Tribunicia Potestate Duodevicesimum, Imperator Tertium, Consul Quartum, Pater Patriae. The eighteenth renewal of Caracalla's tribunician power (TR P XVIII) securely anchors the striking of the coin to AD 215. The letters S C (senatus consulto, 'by decree of the Senate') maintain the long-standing constitutional convention that production of aes denominations was conducted under senatorial authority, preserving an official fiction of institutional partnership even during an era of absolute autocratic military rule.

Typological Classification and Chronological Placement

In the standard reference classification Roman Imperial Coinage, RIC IV Caracalla 538B belongs to the prolific series of aes struck in AD 215 celebrating the healing gods. The type is differentiated from companion issues primarily by the specific bust presentation on the obverse. While RIC IV 538A presents the emperor's bust simply draped or laureate to the right, 538B is explicitly distinguished by the laureate and cuirassed bust viewed from the back. Other contemporary variants depict Asclepius unaccompanied by Telesphorus, or substitute Apollo or Serapis as alternative healing and protective patrons. The precise tribunician count TR P XVIII confirms that dies for this issue were opened after December 10, AD 214, and remained in active production throughout the calendar year AD 215. This chronological window coincides exactly with historical accounts recorded by Cassius Dio and Herodian concerning Caracalla's protracted sojourn in the eastern provinces and his visits to sanctuaries of Asclepius in Thrace and Asia Minor, providing a rare direct synthesis between epigraphic evidence and narrative historiography.

Distribution, Circulation Patterns, and Archaeological Context

Sestertii of the Severan period circulated widely throughout the western and central provinces of the Roman Empire, including Italy, Gaul, the Rhine frontier, and the Danubian military districts. In the eastern provinces, local civic bronze currencies predominated for everyday transactions, but imperial aes denominations frequently traveled with military personnel, imperial administrative staff, and long-distance traders. Archaeological excavation reports and hoard evidence indicate that Severan sestertii generally experienced prolonged circulation periods, frequently remaining in active commercial pools for several decades until the collapse of the base-metal monetary system in the late third century. Consequently, surviving examples of RIC IV Caracalla 538B often exhibit significant handling wear, edge chipping, and uneven patination caused by varied soil environments. Their presence in hoards alongside Antonine and early third-century bronze demonstrates the enduring utility of large copper-alloy denominations as stable units of domestic value despite the rapid debasement observed in contemporary silver coinages.

References

1. Coins of the Roman Empire in the British Museum, Volume V: Pertinax to Elagabalus. Caracalla Aes, AD 215
2. Coinage in the Roman Economy, 300 B.C. to A.D. 700. pp. 125-132
3. The Roman Imperial Coinage, Volume IV, Part I: Pertinax to Geta. p. 301, no. 538b
4. Online Coins of the Roman Empire: RIC IV Caracalla 538B. ric.4.crl.538B
5. Under Divine Auspices: Divine Ideology and the Visualisation of Imperial Power in the Severan Period. pp. 164-178