Marcus Aurelius Bronze Sestertius RIC III Antoninus Pius 1309B

Monetary and Political Context

During the mid-second century AD, the Roman monetary system functioned on a bimetallic and trimetallic basis established by the Augustan reforms and consolidated through the Flavian and Antonine periods. At the base of commercial transactions lay bronze and orichalcum base-metal coinages, dominated by the sestertius, which was tariffed at four copper asses or one quarter of a silver denarius. The sestertius served as both an accounting benchmark for large-scale state expenditures and a heavy everyday coin for regional commerce throughout Italy and the western provinces. Under Antoninus Pius, whose reign was marked by domestic stability, fiscal prudence, and an absence of major territorial conquest, coinage was systematically used to promote dynastic stability and legitimate imperial succession. Marcus Aurelius had been adopted by Antoninus Pius in AD 138 at the instruction of Hadrian, receiving the title of Caesar in AD 139 and tribunician power in late AD 147. By issuing massive quantities of high-quality orichalcum sestertii in Aurelius's name, the imperial administration accustomed the populace, military garrisons, and aristocratic elites to the face and titles of the prospective emperor decades before he acceded to supreme authority.

Production Technology and Minting

The sestertius RIC III Antoninus Pius 1309B was produced exclusively at the central imperial mint in Rome, which held a virtual monopoly over official bronze and brass token coinage for the western half of the empire. Sestertii of this era were manufactured from orichalcum, a golden-toned alloy composed primarily of copper with approximately 15 to 20 percent zinc, although recycling and remelting of older coins frequently caused slight shifts in composition. Blanks were cast in open or two-part moulds, producing thick, circular flans that were often smoothed at the edges before being struck between engraved iron dies. Striking was performed by teams of mint workers (monetarii) using heavy handheld hammers while the blank was heated to improve metal displacement and minimize die fracture. Die alignment during the Antonine period was generally oriented toward a regular medallic or inverted vertical alignment (six or twelve o'clock), though minor variations occur. Because sestertius dies carried broad portraiture and elaborate mythological tableaux across flans exceeding thirty millimeters in diameter, the mint employed master die-engravers capable of rendering nuanced drapery folds, delicate hair curls, and crisp epigraphic lettering.

Obverse Design and Portraiture

The obverse of RIC III Antoninus Pius 1309B features a mature portrait of Marcus Aurelius facing right, depicted bare-headed and draped. By AD 152 to 153, Aurelius had entered his early thirties, and the numismatic portraiture shifts decisively away from the smooth, adolescent depictions of his initial adoption toward an image of seasoned gravitas. His hair is composed of thick, layered curls framing the forehead and temple, while a trimmed beard adorns the jawline and chin, reflecting the prevailing Antonine fashion popularized by Hadrian and adopted by Marcus as an outward marker of philosophical devotion. The drapery covers the shoulders and the base of the neck, suggesting the paludamentum or civic toga gathered over the chest. Because imperial dies were individually cut by hand, surviving specimens exhibit minor variations in the arrangement of hair tufts, the thickness of the facial profile, and the depth of the drapery folds, yet all adhere to the established official prototype authorized by the mint administration.

Reverse Iconography and Attributes

The reverse iconography presents the goddess Minerva seated facing toward the right, a motif rich in religious and ideological significance for the Antonine court. Minerva is depicted wearing a long chiton and peplos, crowned with a crested helmet. In her extended right hand, she holds an upright spear, a traditional symbol of armed vigilance and divine protection. Her left hand is engaged in drawing forward or adjusting the aegis, the protective goatskin mantle adorned with the Gorgoneion that was traditionally associated with Jupiter and adopted by his warrior daughter. Resting securely against the side or base of her chair is a large round or oval shield, resting on its rim to signify defensive preparedness rather than unprovoked aggression. The letters S and C appear prominently in the left and right lower fields, denoting the formal constitutional decree of the Senate (Senatus Consulto) that sanctioned the production of base-metal coinage. The posture of seated Minerva combines the serene wisdom of statecraft with the armed vigilance required to secure the Roman peace.

Epigraphy and Imperial Titulature

The inscriptions on RIC III Antoninus Pius 1309B are executed in formal Roman square capitals, carefully laid out along the inner beaded borders. The obverse legend reads AVRELIVS CAESAR AVG PII FIL, an abbreviation of 'Aurelius Caesar Augusti Pii Filius.' This formulation establishes his personal identity as Aurelius, his status as Caesar, and his legal standing as the son of Augustus Antoninus Pius, linking the junior prince directly to the supreme authority of the reigning emperor. The reverse inscription reads TR POT VII COS II, which expands to 'Tribunicia Potestate Septimum, Consul Iterum.' This formula records that Marcus Aurelius was exercising his tribunician power for the seventh time, while having held the consulship twice (his second consulship having commenced in AD 145). The combination of these specific titles provides an absolute chronological anchor: Aurelius's seventh tribunician year began in late AD 152 and concluded in late AD 153. Flanking the seated deity, the standard formula S C confirms that the coin was struck under senatorial authorization, balancing the prince's dynastic titles with traditional republican form.

Typology and Chronological Placement

Within the typology of the Antonine coinage, RIC III Antoninus Pius 1309B forms part of a focused series of aes issues struck during the middle of Antoninus Pius's fourth consulship, coinciding with Aurelius's seventh tribunician tenure (AD 152-153). While the main series of 1309 includes several bust varieties, subtype 1309B is specifically distinguished by the bare-headed, draped bust facing right, contrasting with alternate varieties displaying cuirassed or laureate presentations. Parallel emissions featuring identical reverse iconography and titular dates were struck across smaller denominations, including middle bronzes (dupondii and asses) and silver denarii, demonstrating a unified programmatic campaign. Minerva was a frequent subject on the coinage of Marcus Aurelius throughout his tenure as Caesar, reflecting his personal intellectual orientation as well as his official duties. The precise annual renewal of tribunician power provides an unambiguous dating horizon for the issue, demonstrating that production commenced in December of AD 152 and ceased upon the renewal of his eighth tribunician power in December of AD 153.

Circulation, Hoards, and Survival

Once released from the mint at Rome, sestertii of this issue entered a wide monetary network extending from Roman Britain and the Rhine frontier to the Iberian peninsula and the Balkans. As a high-value copper-alloy piece, the sestertius saw active circulation over several decades, frequently remaining in market use well into the reigns of Marcus Aurelius as sole emperor and his son Commodus. Over prolonged periods of trade, many specimens suffered heavy surface wear, corrosion, and patina development characteristic of burial in varied soil conditions. Sestertii of the Antonine dynasty regularly appear in major hoard finds across western Europe, such as large regional aes hoards deposited during the political and economic instability of the third century AD. Their prolonged survival in circulation led to substantial mass loss, often dropping from an original mint standard of 25 to 28 grams down to 20 grams or fewer before final deposition. Today, specimens of type 1309B survive in moderate numbers within major public collections and private holdings, serving as critical artifacts for studying dynastic representation in high imperial Rome.

References

1. Coins of the Roman Empire in the British Museum, Vol. IV: Antoninus Pius to Commodus. pp. 310-315
2. Online Coins of the Roman Empire: RIC III Antoninus Pius 1309B. Type record ric.3.ant.1309B
3. The Roman Imperial Coinage, Vol. III: Antoninus Pius to Commodus. p. 182, no. 1309B
4. Die Münzprägung des Kaisers Marcus Aurelius als Caesar und Augustus (139-180). MIR 18, type catalogue entries for AD 152-153