Antoninus Pius Bronze Sestertius, RIC III Antoninus Pius 871A

Monetary Context and Denominational Function

The sestertius functioned as the principal brass coin of the mid-second century AD, anchoring everyday retail commerce, state payouts, and civic accounting throughout the Roman world. Valued at one-quarter of a silver denarius or four copper asses, the denomination occupied an indispensable economic stratum beneath silver and gold coinage. Due to its broad flan and substantial weight, typically averaging between 24 and 28 grams during the mid-Antonine era, the sestertius provided the Roman state with an exceptional visual medium for ideological communication. Under Antoninus Pius, whose reign avoided major offensive military campaigns, monetary output in base metals routinely turned away from triumphant bellicose themes toward civil stability, public munificence, and administrative vigilance. The introduction of Annona on the sestertius reinforced public confidence in the state's most pressing civilian responsibility: securing the maritime and domestic logistics required to provision the capital city.

Production Standards and Minting at Rome

Production of RIC III Antoninus Pius 871A was centered entirely at the imperial mint in Rome, which held exclusive authority over the striking of regular senatorial brass and copper coinage during this period. Sestertii of this era were cast as heavy circular flans of orichalcum, a golden-toned copper-zinc alloy favored for its durability, visual appeal, and sharp striking properties. Although metal refining techniques varied, orichalcum flans in the middle of the second century generally retained significant zinc percentages, though declining slightly relative to Augustan and Julio-Claudian standards. Striking was performed by hand between fixed iron or bronze dies. The heavy mass of the sestertius required immense strike energy, often necessitating several blows to bring out the fine contours of the imperial portrait and the detailed attributes of Annona. Die alignment for the Rome mint in this series remained predominantly regular, typically oriented at either twelve or six o'clock, reflecting a high degree of technical control within the workshop.

Obverse Iconography and Imperial Style

The obverse of this sestertius bears a right-facing, mature portrait of Antoninus Pius wearing the laurel wreath. Antonine portraiture at mid-century achieved a refined classicism, characterized by carefully modeled facial planes, an aquiline nose, a calm expression, and a meticulously arranged beard and hairstyle. Unlike the dynamic military curls seen on portraits of Trajan or the heavily Hellenized locks of Hadrian, Antoninus Pius is rendered as a restrained, benevolent magistrate and paterfamilias. The laurel wreath terminates in neat ribbons tied behind the neck, resting cleanly upon curls rendered with distinct chasing. Die cutters working in Rome produced consistent obverse portraits with only minor variations in relief depth, truncation angle, and the spatial distribution of the surrounding lettering, maintaining a uniform imperial likeness that communicated institutional dignity throughout the provinces.

Reverse Iconography of Annona

The reverse iconography depicts the personification Annona seated to the left on a low seat, draped in a stola and palla. In her right hand, she extends two ears of grain directly over a modius standing upright on the ground line, while in her left arm she supports a full cornucopiae, the horn of plenty. The modius is itself brimming with additional harvested corn-ears, signaling a harvest that exceeds immediate necessity. This imagery carries direct political and economic resonance. Annona represented not merely the annual grain harvest, but the sacred duty and logistical apparatus of the imperial prefects who acquired, transported, and distributed Egyptian and North African wheat to Rome's population. By depicting Annona seated rather than standing, the design conveys established security and serene abundance. Flanking the seated figure in the lower fields is the senatorial mark S C, affirming the traditional collaboration between the Senate and the Princeps in issuing base-metal currency.

Inscriptions and Epigraphic Analysis

The obverse inscription reads IMP CAES T AEL HADR ANTONINVS AVG PIVS P P, rendered in continuous serifed capitals along the perimeter. This legend encapsulates the legal titles and lineage of the emperor: Imperator Caesar Titus Aelius Hadrianus Antoninus Augustus Pius, Pater Patriae. The reference to Aelius and Hadrianus directly underscores his legitimate adoption by Hadrian in AD 138, while Pius highlights the filial devotion and dutiful conduct that defined his public persona. The reverse inscription is split between peripheral dating titles and an explicit thematic dedication. The outer legend reads TR POT XIIII COS IIII, marking the emperor's fourteenth tenure of tribunician power and his fourth consulship. Within the field and exergue, the legend ANNONA AVG designates the fertility and grain supply of the Augustus, explicitly crediting the reigning princeps with securing the commonwealth against famine.

Typology and Chronological Classification

The precise chronological anchor for RIC III Antoninus Pius 871A is provided by the fourteenth tribunician renewal, which commenced on 10 December AD 150 and ended on 9 December AD 151. His fourth consulship had been assumed in AD 145 and remained the highest iteration of that office throughout his lifetime, meaning the tribunician count governs the date of issue. Within Roman Imperial Coinage, type 871A sits amidst a tight sequence of related issues celebrating Annona and Pax struck across AD 150 and 151. Minor typographical distinctions differentiate 871A from neighboring entries, such as variant reverse postures where Annona stands with a rudder, rests her foot upon a prow, or dispenses corn into an altar. Type 871A specifically designates the seated posture with ears of grain held over the modius, a deliberate selection of attributes that should not be confused with the standing Annona sestertii of the same tribunician year.

Circulation, Hoard Evidence, and Monetary Impact

As an orichalcum sestertius, coins of this type circulated widely throughout Italy and the western provinces, including Gaul, the Germanies, and Britain, where large bronze coins dominated commercial markets. Hoard evidence from western contexts indicates that Antonine sestertii experienced protracted periods of active circulation, often remaining in use for several generations well into the third century AD. Due to prolonged physical handling and the soft nature of brass, surviving examples frequently exhibit smoothed high points on the portrait and wear on the delicate corn-ears. Furthermore, countermarks, edge clipping, and secondary patination reflect the varied environmental conditions and localized fiscal interventions these pieces encountered before eventual burial. Their substantial physical presence ensured that the promise of imperial abundance remained visible across provincial markets long after the conclusion of Antoninus Pius's fourteenth tribunician year.

References

1. Money and Government in the Roman Empire. pp. 110-125
2. Coins of the Roman Empire in the British Museum, Vol. IV: Antoninus Pius to Commodus. pp. 290-295
3. Online Coins of the Roman Empire: RIC III Antoninus Pius 871A. ric.3.ant.871A
4. The Roman Imperial Coinage, Vol. III: Antoninus Pius to Commodus. p. 136, no. 871A