Antoninus Pius Bronze Sestertius, RIC III Antoninus Pius 842

Monetary Context and Denominational Function

During the mid-second century AD, the Roman currency system functioned as a tri-metallic hierarchy grounded in the gold aureus, the silver denarius, and a suite of base-metal bronze denominations produced under senatorial rubric. The sestertius was the most valuable and physically imposing of the base-metal pieces, tariffed at one quarter of a silver denarius or four copper asses. Struck from orichalcum, a golden-toned alloy combining copper and zinc, the sestertius possessed both substantial fiduciary prestige and practical commercial utility in everyday market transactions. Large imperial expenditures, public works, and state distributions were traditionally calculated in sesterces, cementing the denomination's foundational role in public accounting. RIC III Antoninus Pius 842 belongs to an expansive mid-reign output of aes coinage issued under stable economic conditions characterized by low domestic inflation and strong institutional confidence.

Production and Mint Organization

RIC III Antoninus Pius 842 was manufactured exclusively at the imperial mint in the city of Rome, which exercised a near-monopoly over the striking of regular bronze and brass coinage for the western and central Mediterranean. Mint operations in Rome were organized into specialized workshops, or officinae, operating under the administrative oversight of the rationalis and procuratores monetae. Bronze blanks were cast in molds and hot-struck by teams of celatores (die engravers), malleatores (hammerers), and suppostores (planchet placers). Sestertii of Antoninus Pius typically adhered to an average weight standard fluctuating between 24 and 28 grams, with a module measuring approximately 31 to 34 millimeters, although deliberate planchet adjustment was often approximate rather than exact for individual pieces. Die alignment for the Rome mint in this period usually favored a regular vertical orientation (12 o'clock or 6 o'clock).

Obverse Iconography and Imperial Image

The obverse of this sestertius displays the right-facing, laureate head of Antoninus Pius. Engravers rendered the emperor with the restrained, classicizing realism typical of Antonine state art: a neatly curled beard, composed facial features, prominent brow, and thick hair bound with a laurel wreath tied at the nape of the neck. The laurel wreath symbolized triumph, divine favor, and legitimate civic leadership, inherited from Augustus. In contrast to the dramatic movement found in Flavian or Trajanic portraiture, Antonine dies convey dignified tranquility, reflecting the peaceful and stable tenor of his governance. The portrait fills the central flan, bordered by a continuous peripheral legend.

Reverse Typology and Allegorical Imagery

The reverse iconography features Aequitas, the Roman personification of equity, fair measure, and distributive justice. She stands draped in a stola, facing left, holding a pair of scales (libra) in her lowered right hand and a horn of plenty (cornucopiae) in her left arm. The balance represented balanced weights and fairness in public transactions, the grain supply (annona), and tax collection, while the cornucopiae signaled the material abundance guaranteed by honest administration. Flanking the lower fields of the figure are the letters S and C, denoting Senatus Consulto, the historic confirmation that the bronze piece was minted by senatorial decree. This visual formula reassured the Roman populace and provincial consumers of the integrity of the state's commercial dealings and currency.

Inscriptions and Epigraphic Analysis

The obverse legend reads ANTONINVS AVG PIVS P P TR P XI in an unbroken clockwise arc. This inscription expands to Antoninus Augustus Pius, Pater Patriae, Tribunicia Potestate XI, listing his imperial titles: Augustus (revered emperor), Pius (dutiful or pious, an honorific awarded by the Senate early in his reign), Pater Patriae (Father of the Fatherland, accepted in AD 139), and Tribunicia Potestate XI (holding tribunician power for the eleventh time). The reverse legend is concisely inscribed as COS IIII, with S C placed across the field. COS IIII (Consul Quartum) indicates his fourth consulship, assumed in AD 145 and retained on coinage for the remainder of his life as his terminal consular milestone. The clarity and regularity of the epigraphy reflect the high calligraphic standards maintained by Rome mint die-sinkers.

Typological Classification and Chronological Placement

The dating of RIC III Antoninus Pius 842 is established by the combination of the tribunician count TR P XI and the consular number COS IIII. Roman tribunician years during the Antonine era renewed annually on December 10, fixing the production of this type securely between December 10, AD 147, and December 9, AD 148. In Harold Mattingly and Edward A. Sydenham's standard catalogue, Roman Imperial Coinage, the type is catalogued as number 842 within the coinage of Antoninus Pius, paralleled by BMCRE IV, no. 1805. It forms part of a thematic sequence of sestertii issued in AD 147 and 148 that celebrated personifications such as Aequitas, Salus, and Felicitas to commemorate administrative milestones, including the tenth anniversary (decennalia) celebrations of Antoninus's accession.

Circulation, Hoard Evidence, and Monetary Lifespan

Sestertii of the Antonine period enjoyed long circulation lives across the Roman Empire, particularly throughout the Latin-speaking western provinces such as Italy, Gaul, Britain, and the Germanies. Hoard evidence demonstrates that second-century orichalcum sestertii frequently circulated for five to eight decades before final deposition, often continuing to pass from hand to hand well into the Severan era. The high intrinsic zinc content of orichalcum gradually degraded into a brassy-brown patina, and specimens of RIC 842 recovered from archaeological contexts routinely show moderate to heavy wear consistent with extensive use. As base-metal coin production decreased in relative output during the third-century inflationary crises, robust second-century sestertii remained critical elements of fractional money until the complete reform of the currency under Diocletian.

References

1. Coins of the Roman Empire in the British Museum, Volume IV: Antoninus Pius to Commodus. p. 297, no. 1805
2. Online Coins of the Roman Empire: RIC III Antoninus Pius 842. ric.3.ant.842
3. The Roman Imperial Coinage, Volume III: Antoninus Pius to Commodus. p. 132, no. 842
4. Untersuchungen zur romischen Reichspragung des zweiten Jahrhunderts, Teil II: Die Reichspragung zur Zeit des Antoninus Pius. pp. 115-122