Emperors arrive in profile

Claim (verbatim)

Emperors arrive in profile. Medieval painters had almost no access to antique painting or free-standing portrait sculpture, but Roman coins passed through their world by the thousand. If coinage was the operative model medium for picturing antiquity, ancient rulers should be drawn in strict numismatic profile at rates far above contemporary rulers in the same books, who follow seal and majesty conventions toward frontal and three-quarter poses. Pose statistics thus encode which medium carried the past.

Prediction clause (verbatim)

Primary clause (the verdict follows it): in images dated 1100-1450, depictions of pre-Christian Roman emperors are in profile in at least 40 percent of cases, versus at most 10 percent for depictions of contemporary kings in the same manuscripts and genres — a fourfold or greater ratio. Secondary clause: the ancient-ruler profile fraction rises further in Italian manuscripts after 1300, tracking antiquarian coin collecting, while Parisian production shows no comparable rise.

Kill-dataset (verbatim)

Kill: the Index of Medieval Art (Princeton) subject-indexed records for ruler imagery, cross-checked against the British Library Catalogue of Illuminated Manuscripts and BnF Mandragore.

Novelty / leakage triage

provisional — model-triaged, shepherd review pending

A provisional first pass authored by the model (Opus), not yet confirmed by the shepherd. It carries the same dated-search requirements as an authoritative verdict but is excluded from every headline figure and cannot underwrite a prediction until a shepherd confirms it. Provisional reading: Adjacent (closely related prior work exists).

The connection that Roman coins were the operative model medium for picturing antiquity is documented -- antiquarians from Petrarch on collected ancient coins and their profile portraits reshaped ruler imagery -- and the item's secondary clause (an Italian rise after 1300 tracking antiquarian coin collecting) is literally the received Renaissance-numismatics narrative. Not located: the item's pose-statistics operationalization -- pre-Christian Roman emperors drawn in numismatic profile in >= 40 percent of 1100-1450 images versus <= 10 percent for contemporary kings in the same manuscripts (a >= 4x ratio), with an Italian post-1300 rise absent in Parisian production -- scored over the Index of Medieval Art. Coin-source connection documented; the manuscript profile-fraction measurement is unrun.

• 'Coins and Medals', Encyclopedia.com (Renaissance antiquarian coin collecting from Petrarch; classical profile portraits reshaping ruler imagery) — Antiquarian coin revival; ancient coins as the model for naturalistic profile ruler portraits.
• Index of Medieval Art (Princeton), subject-indexed ruler imagery, cross-checked against the BL Catalogue of Illuminated Manuscripts and BnF Mandragore — The kill dataset for the ancient-emperor-vs-contemporary-king profile-fraction test.

Predictions

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