Hadrian Sestertius RIC II, Part 3 (second edition) Hadrian 422

Monetary Context and Denominational Role

The sestertius occupied a central structural role within the Roman imperial monetary system stabilized during the Augustan monetary reforms of the late first century BC. Evaluated at one-quarter of a silver denarius or four copper asses, the sestertius represented the largest base-metal coin issued for regular domestic commerce. Rather than being minted in unalloyed copper like the as and quadrans, sestertii and their half-denomination counterparts, dupondii, were manufactured from orichalcum, a golden-toned alloy of copper and zinc. Orichalcum possessed an intrinsic and aesthetic value distinct from red copper, allowing the Roman state to tariff the coin above its base bullion content as a token denomination backed by imperial fiscal authority. During the early reign of Hadrian, the sestertius retained immense practical purchasing power in daily life, serving as standard currency for significant market transactions, civil administrative payments, grain purchases, and fiscal settlements. Beyond its fundamental economic utility, the substantial physical module of the sestertius provided a wide flan that served as the primary canvas for imperial communication. Base-metal issues were formally struck under the decree of the Senate, reflected by the traditional abbreviation S C (Senatus Consulto). This institutional convention maintained the constitutional fiction of shared republican authority between the princeps and the Roman Senate, making the sestertius a pivotal ideological medium throughout the empire.

Production Standards and Mint Operation

RIC II, Part 3 (second edition) Hadrian 422 was produced exclusively at the imperial mint of Rome, which held a monopoly over regular base-metal strikings for the western provinces. The mint operated under organized officinae, or workshops, that maintained exacting standards of die alignment, blank casting, and metallurgical consistency. Orichalcum ingots were prepared using the cementation process, in which ground calamine (zinc ore) was heated together with granulated copper, producing an alloy with zinc concentrations generally ranging between 12 and 18 percent in this period. Flans were individual cast discs that were reheated before striking between hand-held upper dies and anvil-fixed lower dies. Although individual specimens vary naturally in weight due to unadjusted al marco blank preparation, sestertii of this Hadrianic emission were struck to a theoretical weight standard centering around 25 to 28 grams, with diameters spanning between 31 and 34 millimeters. The technical execution of the Rome mint during the early AD 120s is recognized for its high sculptural quality. Die cutters rendered fine physical details and deeply modeled facial contours, reflecting the peak of classicizing imperial artistry encouraged by Hadrian's personal aesthetic preferences.

Obverse Iconography and Imperial Portraiture

The obverse of type 422 presents a right-facing, laureate head of Hadrian with bare neck, executed without the military cuirass or civilian paludamentum found on select contemporary variants. Hadrian's introduction of a closely cropped, groomed beard represented a major departure from the clean-shaven imperial standard maintained by Roman emperors since Augustus. This stylistic choice evoked classical Greek philosophical and cultural ideals, while aligning with the grooming customs prevalent among contemporary officers serving in the field. The head is bound by a laurel wreath (corona triumphalis), secured at the back of the neck with two ribbon ties that drape toward the nape. The facial modeling exhibits the dignified, composed demeanor emblematic of early Hadrianic portraiture: a prominent, straight nose, almond-shaped eye beneath a defined brow, and tightly arranged curls of hair. By eschewing martial accoutrements such as armor or spears on this obverse, the engraving emphasized civic majesty and calm authority, matching the peaceful, constitutional tenor of the reverse motif.

Reverse Iconography and Civic Symbolism

The reverse type depicts the personification Libertas Publica, representing the public liberty and civic rights of Roman citizens. She is shown seated facing left on an ornate, high-backed curule stool or throne. In her extended right hand, she holds forward an olive or laurel branch, while her left arm cradles a long, vertical sceptre resting against the ground line. In the exergue below her seat and footstool, the letters S C are crisply incised. The iconography combines motifs of peace and constitutional governance. The branch symbolizes conciliation, prosperity, and the cessation of domestic conflict, while the sceptre denotes sovereign protection, majesty, and enduring stability. Rather than displaying the pileus (the freedman's cap) often carried by Libertas in contentious political contexts, the branch highlights the restorative character of imperial rule. This representation reassured both the senatorial aristocracy and the citizenry that Hadrian's regime stood for constitutional freedom and lawful administration rather than arbitrary autocracy.

Epigraphic Formulae and Titulature

The obverse legend reads continuously clockwise around the flan: IMP CAESAR TRAIANVS HADRIANVS AVG P M TR P COS III. This comprehensive formula encapsulates the political and constitutional foundations of Hadrian's governance. IMP (Imperator) claims military preeminence; CAESAR and TRAIANVS emphasize his filial link and legal adoption by his deceased predecessor Trajan; and HADRIANVS identifies the emperor personally. AVG (Augustus) asserts the sacrosanct imperial dignity, while P M (Pontifex Maximus) marks him as the chief priest of the Roman state religion. The civil powers are indicated by TR P (Tribunicia Potestate), invoking the ancient plebeian magistracy that conferred sacrosanctity and the power to intercede on behalf of the citizenry. The phrase concludes with COS III (Consul Tertium), noting that Hadrian was serving his third consulship, an office he assumed on January 1, AD 119, and never renewed thereafter. The reverse legend, LIBERTAS PVBLICA, acts as an explanatory title for the personification. The exergual inscription S C (Senatus Consulto) confirms senatorial authority for the bronze issue, reinforcing the constitutional message of public liberty.

Typology and Chronological Sequence

In the revised classification of The Roman Imperial Coinage, Volume II, Part 3 (second edition), type 422 is placed in the chronological window of AD 120 to 121. This date is determined by internal epigraphic evolution and portrait development. Hadrian's earliest issues of AD 117 to 118 incorporated titles such as Parthicus and emphasized his military lineage. By late AD 119, following his assumption of the third consulship, the mint standardized his extended titulature before transitioning to shorter obverse formulae, such as HADRIANVS AVGVSTVS, around AD 124. Type 422 belongs to an extensive group of aes issues from AD 120-121 dedicated to restorative civic virtues, struck in parallel with sestertii celebrating Pietas, Felicitas, Concordia, and Justitia. Within this typological system, type 422 is distinguished specifically by the combination of the laureate, un-draped head facing right, the full unbroken obverse legend ending in COS III, and the seated Libertas holding a branch and sceptre with S C positioned strictly in the exergue.

Circulation, Monetary Lifespan, and Archaeological Context

Once released by the treasury in Rome, sestertii of type 422 circulated across Italy and were exported in substantial volume to western provinces including Gaul, Hispania, Britain, and the German frontier zones. Because of their durable orichalcum composition and substantial weight, sestertii remained in active circulation for decades. Archaeological evidence from western military camps and urban settlements demonstrates that second-century sestertii frequently continued to pass hand-to-hand well into the third century AD, often accumulating heavy surface wear and edge softening before final deposition. In hoards concealed during the monetary and political crises of the mid-third century AD, Hadrianic sestertii regularly appear alongside issues of the Antonine emperors and the Severan dynasty. Over time, their zinc content diminished in newer state emissions, leading the public to favor earlier, heavier orichalcum pieces like type 422. By the late third century, subsequent devaluations and the introduction of the radiate double-denominational system gradually drove these classic sestertii from active circulation into recycling melts or abandoned deposits.

References

1. Coins of the Roman Empire in the British Museum, Volume III: Nerva to Hadrian. pp. 415-418
2. The Metallurgy of Roman Silver Coinage: From the Reform of Nero to the Reform of Septimius Severus. pp. 19-24
3. Online Coins of the Roman Empire: RIC II, Part 3 (second edition) Hadrian 422. RIC II, Part 3 (second edition) Hadrian 422
4. The Roman Imperial Coinage, Volume II, Part 3: From Hadrian to Antoninus Pius (AD 117-138) - Hadrian. p. 115, no. 422