Constantine IX Monomachos, Gold Histamenon Nomisma

Historical Context

Constantine IX Monomachos acceded to the imperial throne of Constantinople on June 11, 1042, securing supreme civil authority through his marriage to the elderly Macedonian empress Zoe, daughter of Constantine VIII. His sudden elevation followed the violent urban insurrection that deposed Michael V Kalaphates. Constantine ruled jointly with Zoe until her death in 1050 and shared imperial collegiate titles with her sister Theodora, who survived him to assume sole power after his death on January 11, 1055.

The thirteen-year reign of Constantine IX unfolded during a critical inflection period for the Byzantine state, characterized by mounting external geopolitical pressure and complex institutional transformation. Imperial borders faced simultaneous destabilization across three primary frontiers: Seljuk Turkish incursions tested the defenses of the eastern themes and the newly annexed Armenian kingdoms, devastating Pecheneg migrations breached the Danube line to ravage the Thracian hinterland, and Norman mercenaries systematically eroded Byzantine administration in southern Italy. Concurrently, ecclesiastical relations between Constantinople and Rome deteriorated sharply, culminating in July 1054 in the mutual excommunications between Patriarch Michael I Keroularios and papal legate Cardinal Humbert of Silva Candida, hardening the East–West Schism.

Within the capital, Constantine pursued lavish domestic and cultural patronage. He refounded the University of Constantinople in 1045, establishing dedicated faculties of law under John Xiphilinos and philosophy under Michael Psellos, while allocating vast imperial resources to the construction and endowment of the monumental Monastery of Saint George of Mangana. This heavy administrative and architectural expenditure coincided with a major fiscal transition. For centuries, the Byzantine gold solidus, or nomisma, had maintained an exceptionally stable fineness of approximately 23 to 24 carats. Under Constantine IX, the imperial treasury began a structured, sequential debasement of the gold coinage, with fineness descending in distinct phases from roughly 22 carats down to approximately 18 carats (around 75% fine gold) by the close of the reign, accompanied by an expansion in flan diameter and the emerging development of concave, or scyphate, fabric.

Obverse Iconographic Composition

The obverse displays a half-length, strictly frontal bust of Christ Pantokrator (the Almighty). Christ is portrayed with a short, neatly trimmed, curled beard and flowing hair parted centrally and falling behind the shoulders. He is attired in a classical tunic, or chiton (colobium), visible at the neck, draped beneath a heavy mantle, or himation (pallium), that envelops his left shoulder and arm in layered folds.

Encircling the head is a prominent cruciform nimbus (nimbus cruciger). A primary diagnostic hallmark of this specific issue is the presence of an upturned crescent positioned in each of the two upper exposed quarters of the cross arms. Christ's right hand is elevated before the center of his chest in an authoritative gesture of benediction, with the thumb touching the ring finger while the index and middle fingers remain upright. In his left hand, partially enveloped by the himation, he supports a thick, jeweled codex of the Gospels against his torso, adorned with prominent pellets signifying precious stones on the binding cover.

The entire composition is enclosed by an elaborate triple border consisting of concentric linear and finely beaded rings. This pronounced border arrangement is characteristic of eleventh-century Constantinopolitan gold output, framing the broad flan and accentuating the visual authority of the divine bust.

Obverse Epigraphy and Inscriptions

The obverse margin bears a continuous circular religious legend executed in Byzantine epigraphic majuscule. The lettering combines traditional Latin text with transitional Byzantine letterforms, characteristic of the conservative epigraphic conventions preserved on imperial gold coinage:

• Complete Inscription: +IhS XIS RЄX RЄϚNANTIhm
• Epigraphic Transliteration: + Iē[su]s Chri[stu]s Rex Regnantium
• Language: Latin
• Paleographical Notes: The legend employs Greek and hybrid uncial shapes to render the Latin phrase, including the Greek eta form h representing Latin E, the Greek chi X alongside S representing Christus, a lunate epsilon with middle bar RЄX, the character Ϛ or S-like form for G, and a cursive or uncial minuscular shape m for the terminal M.
• English Translation: "Jesus Christ, King of those who reign" (King of Kings)
• Arrangement: The legend commences with an initial cross at approximately the 10 o'clock position and reads clockwise around the peripheral field between the outer halo edge and the triple circular border.

On individual struck specimens, including institutional pieces such as Cleveland Museum of Art 1964.424 and 1968.63, the peripheral legend often exhibits localized softness, partial truncation, or incomplete impression where the broad, slightly curved flan failed to receive uniform die pressure during striking.

Reverse Iconographic Composition

The reverse features a half-length, facing bust of Emperor Constantine IX Monomachos, depicted with a full, neatly trimmed beard and mustache. The emperor wears the stemma, a rigid imperial crown surmounted by a Latin cross and adorned with hanging pearl pendants (pendilia) that flank the cheeks and terminate in triple beads. He is vested in the ceremonial loros, an intricately embellished, heavy woven sash decorated with square and lozenge-shaped panels studded with raised pellets representing embedded pearls and gemstones. The loros is draped formally across the shoulders and gathered at the waist.

In his right hand, Constantine IX holds a long cross-scepter upright before his right shoulder; the shaft is decorated with ornamental nodes along its length. In his left hand, he holds an imperial globus cruciger, an orb surmounted by a cross with distinct pellets at the terminals of each arm, symbolizing universal dominion under Christ. In the right field, situated directly beside the emperor's head, appears a prominent field mark consisting of an isolated cluster of pellets arranged in the form of a small rosette or cross.

The reverse composition is enclosed within a matching triple concentric border consisting of inner and outer beaded rings flanking a continuous linear circle. This expansive decorative frame complements the broad flan architecture typical of the middle period of Constantine's monetary production.

Reverse Epigraphy and Inscriptions

The reverse inscription serves as the formal imperial titulature, executed in Byzantine Greek majuscule with contemporary ligature styles:

• Complete Inscription: +CⲰnSTAnTn bASILEЧS Rm
• Epigraphic Transliteration: + Cōnstant[i]n[os] basileus R[ō]m[aiōn]
• Language: Byzantine Greek
• Paleographical Notes: The epigraphy incorporates distinctive late Macedonian forms, including the lunate sigma C, a rounded uncial omega Ⲱ, a minuscule-influenced beta b, square-form nus n, and the digraph or curved upsilon character Ч. The final elements represent standard abbreviations for the imperial title and Roman citizenry.
• English Translation: "Constantine, Emperor of the Romans"
• Arrangement: The circular legend opens with an initial cross at the 12 o'clock position directly above the emperor's stemma, continuing clockwise down the right and left margins, segmented by the crown, cross-scepter, and imperial bust.

As documented in standard corpora, complete legibility depends on flan centering; peripheral letters such as the terminal Rm or central syllables frequently fall slightly off-flan or merge with the innermost beaded ring on preserved struck specimens.

Typology and Documented Variants

In the classification established by Philip Grierson for the Dumbarton Oaks Collection, the gold histamena of Constantine IX Monomachos struck at the imperial mint of Constantinople are divided into four primary typological classes:

• Class I (DOC III.2, no. 1; Sear 1828): Struck c. 1042–1044 CE. Obverse depicts Christ Pantokrator seated facing upon a lyre-backed throne. Reverse features a facing bust of Constantine IX in loros, holding a cross-scepter ornamented with a crescent-tendril in the right hand and a globus cruciger surmounted by a patriarchal cross in the left; enclosed by a triple border.
• Class II (DOC III.2, no. 2; Sear 1829): Struck c. 1044–1049 CE. Obverse depicts Christ seated facing on a lyre-backed throne. Reverse displays a facing bust of Constantine IX in loros, holding a labarum in the right hand and a plain globus cruciger in the left; enclosed by a triple border.
• Class III (DOC III.2, no. 3; Sear 1830; BnF II, nos. 4–10; Füeg Type 3.A): Struck c. 1049–1053 CE. Obverse introduces the facing bust of Christ Pantokrator with upturned crescents in the upper nimbus quarters. Reverse presents the facing bust of Constantine IX holding a long cross-scepter and globus cruciger, with an isolated pellet cluster in the right field; enclosed by a triple border. The Cleveland Museum of Art specimens (accessions 1964.424 and 1968.63) belong typologically to this third class.
• Class IV (DOC III.2, no. 4; Sear 1831; the "Stellatus"): Struck c. 1054–1055 CE. Obverse retains the facing bust of Christ Pantokrator with nimbus crescents. Reverse transitions to a facing bust of the emperor wearing a jeweled chlamys, holding a globus cruciger in the right hand and the hilt of a sheathed sword in the left, with the imperial head flanked by two eight-rayed stars.

Throughout his reign, Constantine IX also produced the parallel tetarteron nomisma (DOC nos. 5–6; Sear 1832–1834). While the histamenon maintained a broad, thin flan (approximately 26 to 29 mm in diameter) and a target mass of roughly 4.35 to 4.45 grams, the tetarteron was struck on a substantially smaller, thicker, flat flan (approximately 18 to 20 mm in diameter) at a reduced target weight of approximately 4.00 to 4.05 grams. This deliberate physical contrast allowed the two denominations to circulate concurrently while remaining distinguishable to commerce.

Scholarly Debates and Attribution Limitations

The gold coinage of Constantine IX occupies a prominent position in several ongoing numismatic controversies:

The Origins of the Scyphate Fabric

During the middle and later years of Constantine IX's reign, histamena began displaying noticeable flan concavity, prefiguring the deeply cup-shaped (scyphate or trachy) coins of subsequent dynasties. Michael F. Hendy proposed that this curvature was introduced intentionally as an institutional and tactile differentiator, allowing merchants to distinguish the full-value histamenon from the lighter, flat tetarteron at a glance. Conversely, Cécile Morrisson and Franz Füeg argued that concavity arose as a practical response to mechanical striking constraints: as mint workers hammered progressively thinner, broader gold flans, slightly curved dies were adopted to distribute the striking blow evenly from center to periphery, preventing flan buckling and edge cracking. Philip Grierson firmly dismissed the popular collectors' hypothesis that concave flans were devised to facilitate stacking, emphasizing that hoard evidence confirms Byzantine gold was transported in sealed bags or leather rolls, and that variable strike angles and differing dies prevent scyphate pieces from nesting uniformly.

Economic Drivers of Debasement

Contemporary chronicler Michael Psellos harshly censured Constantine IX for fiscal irresponsibility, asserting that the emperor emptied the imperial treasury on personal luxuries, architectural excess, and frivolous donations. While earlier historians accepted Psellos's narrative at face value, modern monetary analyses by Morrisson, Grierson, and subsequent economic historians suggest that debasement from ~22 to ~18 carats was primarily driven by economic expansion, rapid monetization, and escalating military expenditures. By lowering alloy purity, the imperial mint substantially increased the absolute volume of coin in circulation to satisfy the liquidity demands of flourishing urban trade without immediately precipitating hyperinflation.

Astronomical Hypotheses Regarding Class IV

Scholars such as G. W. F. Drake suggested that the two prominent eight-rayed stars flanking the emperor on Class IV histamena directly commemorated the appearance of supernova SN 1054, recorded by contemporary observers in July 1054. However, mainstream numismatic consensus views this connection with caution. Astral elements, including stars and crescents, had formed part of Roman and Byzantine imperial symbolism for centuries as emblems of cosmic authority and heavenly protection. The appearance of crescents in Christ's nimbus on Class III coins several years before the supernova indicates an ongoing programmatic use of celestial iconography that predates the 1054 event.

Institutional Data Limitations

The Cleveland Museum of Art accession records for specimens 1964.424 (Norweb Collection) and 1968.63 (Milliken Gift) record an institutional date bracket of 1042–1055 CE and a diameter measurement of 2.9 cm (29 mm). The institutional records omit specific individual mass (weight in grams), die axis, specific gravity, and metallurgical gold assays. The assignment of these specimens to Class III (c. 1049–1053 CE) relies on typological correspondence with published reference corpora. Individual physical parameters should not be assumed or interpolated without direct institutional measurement.

References

1. The Cleveland Museum of Art, Object Record 1964.424: Nomisma with Constantine IX Monomachus. Accession 1964.424, The Norweb Collection
2. The Cleveland Museum of Art, Object Record 1968.63: Nomisma with Constantine IX Monomachus. Accession 1968.63, Gift of William Mathewson Milliken
3. Catalogue of the Byzantine Coins in the Dumbarton Oaks Collection and in the Whittemore Collection, Volume 3: Leo III to Nicephorus III, 717–1081. Part 2: Basil I to Nicephorus III (867–1081). pp. 733–744, specifically p. 740, no. 3, and Pl. LVIII.3
4. Byzantine Coins. Chapter 9, pp. 196–198
5. Catalogue des monnaies byzantines de la Bibliothèque Nationale, Tome II: De Philippicus à Alexis III (711–1204). pp. 620–621, nos. 4–10
6. Byzantine Coins and Their Values. Sear nos. 1828–1834, specifically no. 1830
7. Studies in the Byzantine Monetary Economy c. 300–1450. pp. 506–512 (Further reading)