Antoninus Pius Silver Denarius, RIC III Antoninus Pius 22a

Monetary Context

When Antoninus Pius acceded to supreme power in the summer of AD 138, the imperial monetary system maintained the established bimetallic and trimetallic structure consolidated by the Flavians and Trajan. The silver denarius functioned as the primary transactional denomination across urban commerce, military pay, and bureaucratic administration. Production standards under Hadrian had established a mean weight between 3.15 and 3.40 grams, with a silver fineness fluctuating between eighty and eighty-five percent. Antoninus Pius initially adhered to this metrological benchmark upon assuming office. The denarius of AD 139, catalogued as RIC III Antoninus Pius 22a, fits squarely into the regular silver output of the Rome mint during the emperor's second year of rule. The economic stability of the early Antonine period avoided immediate fiscal crises, enabling the mint to emit high-volume issues without emergency debasements. Denarii produced under this early series fulfilled recurring state expenditures, including troop disbursements, civil salaries, and distributions to the Roman populace, while quietly asserting the continuity and legitimacy of the new principate.

Production and Mints

The mint of Rome was the sole authorized production center for standard imperial denarii during the early reign of Antoninus Pius. Operating under the oversight of imperial procurators and freedmen administrators, the Rome mint was organized into specialized workshops or officinae, each executing die engraving, flan preparation, and striking. Blank flans were cast in spherical molds or flattened from cut rods, then heated and struck by hand between engraved iron or bronze dies. Type 22a was produced by mechanical hand striking, resulting in characteristic variations in centering, flan thickness, and die axis. Die studies across Antonine silver show that reverse dies tended to wear out faster than obverse dies, leading to die linkages across related reverse types within the same consular issue. Die-engravers at Rome exhibited exceptional consistency in portrait rendering, executing the emperor's mature features with sober realism that aligned with official imperial portrait models distributed from Rome across the empire.

Obverse Design and Portraiture

The obverse of RIC III Antoninus Pius 22a features the bare head of Antoninus Pius facing right. Certain die varieties exhibit light drapery visible over the far left shoulder, though the head itself remains entirely uncrowned, lacking the laurel wreath that denotes formal triumph or subsequent standard imperial portraiture. The features are delineated with classical restraint: a neatly curled beard, trimmed mustache, prominent aquiline nose, and deeply set eye beneath a strong brow. This bare-headed presentation is particularly characteristic of the opening months of Antoninus's reign and into his second consulship, projecting civic modesty, pietas, and filial deference to his deified predecessor. The surrounding legend begins at the lower left and reads clockwise: IMP T AEL CAES HADR ANTONINVS. The dies for this obverse type demonstrate skilled engraving, balancing high-relief facial musculature with fine calligraphic lettering along the beaded border.

Reverse Iconography and Symbolism

The reverse design of type 22a depicts Fortuna, the Roman personification of luck, fate, and prosperity, standing draped and facing toward the left. In her right hand she grasps a vertical ship's rudder, which rests upon or nears the ground line, symbolizing divine steering and governance over the state's destinies. In her left arm she cradles a horn of plenty (cornucopiae), laden with fruits, symbolizing the material abundance and nourishment guaranteed by a virtuous princeps. The drapery of her stola and palla cascades in elegant folds to her feet, typical of the classicizing stylistic revival prominent under the Antonine administration. By invoking Fortuna rather than an explicitly martial deity, the issue communicated stability, agricultural security, and providential guidance at the outset of a peaceful reign. The iconography deliberately resonated with senatorial and popular expectations of harmonious imperial stewardship.

Epigraphy and Legend Analysis

The epigraphic program of RIC III Antoninus Pius 22a is split between both faces of the coin, forming a single continuous titulature when read in sequence. The obverse legend, IMP T AEL CAES HADR ANTONINVS, abbreviates Imperator Titus Aelius Caesar Hadrianus Antoninus. This nomenclature captures his full formal identity adopted upon his formal entry into the Aelian family in early AD 138, acknowledging Hadrian as his adoptive father while retaining the cognomen Antoninus. The reverse legend continues the imperial titulature: AVG PIVS P M TR P COS II. This formula abbreviates Augustus Pius, Pontifex Maximus, Tribunicia Potestate, Consul Secundum. The cognomen Pius, conferred by the Senate shortly after Hadrian's death, occupies a prominent position on the reverse field, while Pontifex Maximus and Tribunicia Potestate indicate his supreme sacerdotal authority and civil leadership. The final element, COS II, securely dates the striking to his second consulship, which commenced on January 1, AD 139.

Typology and Chronological Classification

Within the typology of the Roman Imperial Coinage, RIC III Antoninus Pius 22a belongs to the early consular emissions of AD 139. In the foundational catalogue of Mattingly and Sydenham, type 22 is divided based on portrait attributes: type 22a represents the bare-headed variety, whereas type 22b encompasses specimens where the imperial head is adorned with a laurel wreath. Both variants share identical obverse inscriptions and the identical reverse type of Fortuna standing left with rudder and cornucopiae. Paul Strack's corpus of imperial coinage similarly separates these issues within his chronological framework for the second consulship. The bare-headed portrait of 22a was phased out as laureate portraiture became the nearly universal norm for denarii later in the consulship and across subsequent tribunician renewals. Because Antoninus entered his third consulship (COS III) on January 1, AD 140, type 22a is strictly constrained to the calendar year AD 139.

Circulation and Hoard Evidence

Denarii of Antoninus Pius, including RIC III 22a, enjoyed widespread geographic distribution and extensive circulation throughout the Roman world. Hoard evidence from Britain, Gaul, the German limes, the Danubian provinces, and the Levant demonstrates that early Antonine denarii circulated alongside Flavian, Trajanic, and Hadrianic silver for several generations. Because the metal content of early Antonine denarii maintained an average purity above eighty percent, these coins were readily accepted across military and civilian markets. They circulated actively until the substantial debasements enacted under Septimius Severus and Caracalla in the late second and early third centuries AD. As later, baser issues flooded the markets, earlier higher-grade denarii of Antoninus Pius were progressively hoarded, melted down, or lost, leaving a durable record in imperial coin hoards that confirms their prolonged commercial life.

References

1. Coins of the Roman Empire in the British Museum, Volume IV: Antoninus Pius to Commodus. pp. 14-16
2. The Roman Imperial Coinage, Volume III: Antoninus Pius to Commodus. p. 29, no. 22a
3. Online Coins of the Roman Empire: RIC III Antoninus Pius 22a. ric.3.ant.22a
4. Untersuchungen zur romischen Reichspragung des zweiten Jahrhunderts, Teil III: Die Reichspragung zur Zeit des Antoninus Pius. pp. 51-54