Antoninus Pius Bronze Sestertius RIC III Antoninus Pius 648

Monetary and Denominational Context

During the mid-second century AD, the Roman monetary system was characterized by remarkable structural stability and disciplined fiduciary organization. The sestertius stood as the paramount large bronze denomination within the imperial currency hierarchy, valued at four bronze asses or one-quarter of a silver denarius. Functioning as the primary accounting unit of the Roman state, the sestertius mediated substantial commercial transactions, tax remittances, military pay adjustments, and civic distributions throughout Italy and the western provinces. Struck from orichalcum, a brass alloy composed of copper and zinc, the sestertius possessed a bright golden hue when freshly minted that immediately set it apart from red copper asses. The generous flan diameter and substantial weight of the sestertius rendered it an ideal vehicle for complex, highly detailed public announcements. Under Antoninus Pius, monetary output emphasized administrative steadiness, civic peace, and traditional piety, avoiding the radical financial debasements that marked later imperial crises. In this context, RIC III Antoninus Pius 648 served as an indispensable medium of elite and popular currency, reinforcing institutional continuity across the Mediterranean basin.

Production Standards and Mint Organization

The entire regular production of imperial brass and copper coinage during the reign of Antoninus Pius was centralized at the mint of Rome. Operating under the administrative oversight of the imperial equestrian procurator and traditionally coordinated with senatorial oversight signified by the formulaic S C inscription, the mint executed massive emissions divided among distinct officinae. Flan preparation for the sestertius entailed casting thick circular blanks in open or two-part gang moulds, which were subsequent adjusted, heated, and struck between hand-held engraved steel dies. The physical standards for mid-second century sestertii typically targeted an average flan diameter between 30 and 34 millimeters and a theoretical mass around 24 to 28 grams, although individual surviving examples exhibit standard deviations resulting from manual flan adjustment. Chemical analyses of Antonine orichalcum reveal that zinc contents, which had stood near twenty percent under Augustus, had decreased through recycling to roughly ten to twelve percent by the 140s AD. Die axis alignment at Rome was predominantly regular, oriented along a vertical or near-vertical axis.

Obverse Iconography and Imperial Image

The obverse of RIC III Antoninus Pius 648 presents a mature, dignified portrait of the emperor Antoninus Pius, depicted with a laurel wreath and facing to the right. Rendered in the classicizing, serene style that came to define Antonine court art, the emperor is shown with carefully dressed hair curled around the forehead and nape, accompanied by a well-groomed, moderately trimmed beard. This aesthetic drew upon the philosophical iconography pioneered under Hadrian while projecting a warmer, more paternal Roman senatorial gravitas. The laurel wreath rests securely on his head, tied at the occiput with two ribbons that cascade gracefully down toward his neck. The portrait exhibits an unlined, composed expression that intentionally conveyed tranquility, self-restraint, and dutiful devotion to the gods and state. The execution avoids overt military triumphalism, reflecting an emperor who governed without personally undertaking foreign military campaigns.

Reverse Typology: The She-Wolf and Divine Twins

The reverse of the type features one of the most venerable and deeply rooted symbols in Roman iconographic tradition: the Lupa Romana suckling the infant twins Romulus and Remus. The she-wolf stands proudly facing right, turning her head back and downward in a posture of maternal vigilance to attend to the twin infants sheltered beneath her belly. Romulus and Remus are depicted kneeling side by side upon the ground line, reaching upward to nurse. This legendary scene directly evoked the divine rescue of the founders of Rome on the banks of the Tiber, celebrating Mars as their progenitor and the wilderness as their providential sanctuary. The selection of this foundational myth during the early 140s AD formed part of an intentional antiquarian revival overseen by Antoninus Pius. Rather than publicizing ongoing military victories, the regime chose to venerate the primeval origins of the city, instilling pride in Roman heritage and setting a festive tone in anticipation of the nine-hundredth anniversary of the founding of Rome.

Epigraphy and Imperial Titulature

The inscriptions on RIC III Antoninus Pius 648 provide precise legal and chronological information defining the authority behind the issue. The obverse legend reads ANTONINVS AVG PIVS P P, standing in abbreviated form for Antoninus Augustus Pius, Pater Patriae. The inclusion of Pater Patriae, Father of his Country, reflects the emperor's formal acceptance of the title in AD 139 after an initial polite refusal upon his accession in AD 138. The reverse inscription is arranged in two distinct elements: the peripheral legend TR POT COS III and the prominent field inscription S C. TR POT COS III abbreviates Tribunicia Potestate, Consul Tertium, confirming that Antoninus was wielding the annual tribunician power and had entered his third consulship, which commenced on January 1, AD 140. Flanking the main reverse device, the letters S C stand for Senatus Consulto, by decree of the Senate. This traditional phrase denoted senatorial sanction for base-metal coinage, perpetuating the historic constitutional division between imperial precious-metal minting and senatorial copper-alloy authorization.

Typological Variants and Chronological Range

The chronological envelope for RIC III Antoninus Pius 648 is securely bounded between AD 140 and AD 144. Antoninus Pius assumed his third consulship in AD 140, and he did not enter his fourth consulship until January 1, AD 145. Because the reverse inscription records COS III without a specific numeral appended to the tribunician power, the issue cannot be isolated to a single calendar year, but belongs to the multi-year cycle of issues produced before the renewal of the consulship in AD 145. Within the broader series of mythological and foundational types struck during this consulship, RIC 648 stands as the definitive sestertius type combining the simple laureate head right with the she-wolf standing right suckling the twins. Related parallel types include medallion issues with elaborate landscaped backgrounds, smaller middle-bronze denominations such as dupondii and asses bearing similar foundation iconography, and variant compositions where the she-wolf is situated within the Lupercal grotto or oriented to the left. RIC 648 represents the standardized monumental expression of this iconographic cycle.

Circulation Patterns and Archaeological Distribution

Sestertii bearing the portrait of Antoninus Pius enjoyed wide and prolonged circulation throughout the Roman Empire, remaining active in monetary channels for decades following their manufacture. Archaeological evidence from hoards and stratified site finds demonstrates that second-century sestertii circulated intensely across Italy, the Danubian frontier, Gaul, Germania, and Roman Britain. Because of their durable orichalcum composition and substantial mass, coins of the RIC 648 type frequently survived in everyday circulation well into the third century AD, when inflation and reduced minting of large base metal resulted in older sestertii being heavily worn, countermarked, or retained in long-term savings deposits. Hoards dating to the reigns of Marcus Aurelius, Commodus, and the Severan dynasty regularly include well-circulated sestertii of Antoninus Pius. The widespread dispersion of this foundation type carried the iconic imagery of Rome's sacred genesis to frontier garrisons and provincial towns alike, reinforcing a shared civic identity across culturally diverse imperial territories.

References

1. Coins of the Roman Empire in the British Museum, Volume IV: Antoninus Pius to Severus Alexander. pp. 195-197
2. Coinage in the Roman Economy, 300 B.C. to A.D. 700. pp. 83-96
3. The Roman Imperial Coinage, Volume III: Antoninus Pius to Commodus. p. 113, no. 648
4. Online Coins of the Roman Empire: RIC III Antoninus Pius 648. ric.3.ant.648
5. Roman Medallions (Numismatic Studies 5). pp. 138-142