Antoninus Pius Dupondius, RIC III Antoninus Pius 1018

Monetary Context of the Antonine Dupondius

During the reign of Antoninus Pius, the Roman imperial monetary system functioned as an integrated bimetallic and base-metal currency designed to facilitate both vast administrative transactions and low-level daily commerce. Within the token brass and copper division, the dupondius served as an essential intermediate denomination. Valued at two asses, half a sestertius, or one-eighth of a silver denarius, it bridged everyday market retail and intermediate payments. First systematized under Augustus, the denomination was struck in orichalcum, a golden alloy composed primarily of copper and zinc. In early imperial practice, this bright alloy immediately set the dupondius apart from the red pure-copper as. Over time, particularly by the middle of the second century AD, recycling of scrap metal and fluctuating supply in zinc mines gradually reduced the zinc content of orichalcum flans across imperial issues, making the alloy somewhat less visibly distinct in circulation. To prevent confusion between the dupondius and the as when coins became worn or heavily patinated, the Roman mint maintained the rigid convention initiated during the early Principate: the emperor appeared with a radiate crown on the dupondius, while the as typically retained a laureate or bare head. The issue catalogued as RIC III Antoninus Pius 1018 reflects this ongoing denominational discipline, providing stable medium-value cash to meet commercial demand across Italy and the western provinces.

Mint Production at Rome

Production of RIC III Antoninus Pius 1018 was concentrated exclusively at the principal imperial mint in the city of Rome, which handled virtually all regular aes issues for the western empire during the Antonine period. Coin manufacture involved preparing blank cast flans of orichalcum, which were then cold-struck or slightly warm-struck between hand-engraved dies. Engravers prepared dies with meticulous care, executing fine portrait details and consistent letterforms conforming to standard imperial artistic guidelines. The reverse design of a sacrificial scene required deep relief, placing high mechanical demands on the dies. Striking was performed by teams of mint workers under the supervision of the procurator monetae. Although bearing the formula S C indicating production by senatorial authority, the issue was directed by imperial finance officials, who integrated aes output into the general fiscal budget of the state. Metallurgical examinations of mid-second-century dupondii reveal a typical target weight of around 11 to 14 grams, with diameters averaging approximately 26 to 28 millimeters, though considerable weight variation occurred naturally due to mass flan preparation by al marco standards rather than individual piece weighing.

Obverse Iconography and Imperial Image

The obverse of RIC III Antoninus Pius 1018 carries a mature, dignified portrait of Emperor Antoninus Pius facing right. He wears the radiate crown, the rays of the sun projecting from his hair to denote the dupondius denomination while evoking solar associations of divine favor and majesty. In keeping with the established portraiture of his reign, Antoninus is depicted with carefully combed, undulating locks of hair and a trimmed beard, reflecting the philosophical, restrained Hellenic aesthetic popular among the Antonine elite. The die cutters avoided excessive idealization, capturing the emperor's mature age during his twenty-second year of tribunician power, marked by defined facial planes and a calm, benevolent expression. The portrait is encircled by an unbroken inscription that borders the beaded rim, integrating imperial nomenclature with administrative dating markers.

Reverse Imagery and Religious Symbolism

The reverse design of RIC III Antoninus Pius 1018 presents an elaborate scene of Roman imperial ritual. Antoninus Pius stands facing left, robed in a toga with his head veiled in the manner of the pontifex maximus conducting sacred rites. In his right hand he holds a patera, a shallow libation bowl, extending it over a lighted tripod altar to pour an offering. His left arm rests at his side, holding the folds of his garment. Resting on the ground beside the altar is a sacrificial bull, lying in a docile posture, ready for the culmination of the ritual sacrifice. This composition visualizes the solutio votorum, the ceremonial discharge of public vows previously undertaken for the emperor's health and continued preservation of the state. The bull, the standard sacrificial animal for major public ceremonies honoring Jupiter Optimus Maximus and related deities, conveys solemnity, obedience, and cosmic order. Flanking the scene in the fields are the large letters S and C, certifying that the coinage was issued in accordance with the decree of the Roman Senate.

Epigraphic Analysis and Titulature

The legends on RIC III Antoninus Pius 1018 are concise yet dense with political, religious, and chronological information. The obverse reads ANTONINVS AVG PIVS P P TR P XXII, abbreviating Antoninus Augustus Pius, Pater Patriae, Tribunicia Potestate XXII. This inscription asserts his imperial title Augustus, his cognomen Pius, bestowed for devotion to his adoptive father Hadrian and the state religion, and the title Pater Patriae. The final component, TR P XXII, provides the secure chronological foundation of the strike, indicating his twenty-second annual renewal of the tribunician power. The reverse legend reads VOTA SOL DEC II COS IIII, with S C in the lower field. The phrasing abbreviates Vota Soluta Decennalia Secunda, Consul Quartum, announcing that the emperor had successfully discharged his second set of ten-year vows, representing twenty years of rule, and noting his fourth consulship, assumed in AD 145 and retained as a perpetual honorific element on subsequent coin issues. The letters S C, Senatus Consulto, affirm traditional senatorial sanction for base-metal currency.

Typology and Chronological Classification

Within the corpus of Roman Imperial Coinage, RIC III Antoninus Pius 1018 is classified under the bronze issues of Antoninus Pius struck between AD 158 and 159. Antoninus Pius was invested with the tribunicia potestas for the first time in AD 138, and his annual renewals occurred every December 10. Consequently, Tribunicia Potestate XXII ran from December 10, AD 158 through December 9, AD 159. The type forms an integral part of a broader celebratory series struck in gold, silver, sestertii, dupondii, and asses commemorating the conclusion of twenty years of stable rule and the transition to the next cycle of imperial vows. While parallel sestertii and denarii carried similar motifs of sacrifice over a tripod altar, the radiate dupondius specifically provided a distinctive visual vehicle for the announcement within the mid-value bronze pool. In Paul Strack's foundational cataloguing of the imperial coinage of Antoninus Pius, this emission is integrated among the commemorative decennial issues that highlighted imperial religious continuity without radical design breaks.

Circulation Patterns and Archaeological Recovery

As an essential fractional denomination, the dupondius enjoyed an exceptionally wide geographic distribution and lengthy circulation lifespan. Coins of RIC III Antoninus Pius 1018 circulated extensively throughout Italy, the Rhine and Danube frontiers, Roman Gaul, and Britain, where base-metal currency formed the backbone of military payroll expenditures and town market exchanges. Because bronze denominations possessed lower intrinsic value relative to their face value compared to silver denarii, they circulated vigorously and were rarely hoarded in large numbers unless combined in general site assemblages or mixed votive deposits. Archaeological finds from military forts, urban vici, and rural villas frequently produce Antonine dupondii showing moderate to severe surface wear, demonstrating that specimens struck in the late 150s remained in daily use for several decades, often into the Severan era or the mid-third century AD until the debasement of the silver coinage fundamentally disrupted the early imperial base-metal monetary structure.

References

1. Coinage in the Roman World. London (1987)
2. The Roman Imperial Coinage, Vol. III: Antoninus Pius to Commodus. p. 151, no. 1018
3. Online Coins of the Roman Empire: RIC III Antoninus Pius 1018. ric.3.ant.1018
4. Untersuchungen zur romischen Reichspragung des zweiten Jahrhunderts, Teil III: Die Reichspragung zur Zeit des Antoninus Pius. Stuttgart (1937)
5. Die Munzpragung des Kaisers Antoninus Pius (Moneta Imperii Romani 18). Vienna (1987)