The Mérida Portrait Head: Recut, Restored, or Both?
A municipal museum in Mérida is preparing a new display of its Roman sculpture. A marble portrait head of a woman, 32 cm high, entered the collection in 1941 with the label 'Hadrianic, c. 120 CE'. The head is set on a separately carved, polished neck that does not match the weathered surface of the face; the nose and both earlobes are restored in plaster. Ultraviolet light shows a thick, milky fluorescence over the neck and along a horizontal break at the jaw. Petrographic analysis identifies Docimium marble for the head and Carrara for the neck. The hair is worked with broad, flat chisel strokes, and the eyes have shallow drilled pupils; there are no incised wrinkles. One curator proposes re-dating the piece to the Constantinian period, early 4th century, because of the frontal gaze and simplified hair. A second curator argues that it is a 2nd-century head recut in late antiquity. The display opens in six months, and the wall text must commit to a date range and explain the restorations.
1. Build the strongest dating argument and state the date range you would print. Identify which single feature is least reliable.
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Start with the object's biography, not a single trait. The composite neck, jaw break, and UV fluorescence show the head was separated and rejoined, which makes recutting plausible. A 2nd-century date is supported by the Docimium marble, the broad chisel work, and shallow drilled pupils, which appear in Antonine portraits. A 4th-century date is supported by frontality and simplified hair, but frontality occurs in many periods and is weak on its own. The absence of wrinkles is not diagnostic because female portraits often idealize. The strongest method is microscopic comparison of tool marks on the face with dated recut portraits and examination of the break surface for a secondary carve. Print '2nd century CE, with extensive 4th-century reworking' only if tool marks confirm recutting; otherwise print '2nd century CE'. The least reliable feature is the frontal gaze.
2. How should the museum label and display the head given the restorations and the composite neck? Address conservation ethics and visitor understanding.
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Do not present a composite as a single ancient object. First conserve reversibly: document all plaster, map the UV fluorescence, and avoid cleaning the neck before analysis. Display the head on a mount that makes the join visible rather than hiding it. The label should state: marble head, 2nd century CE; neck and restorations later; reworking suspected. Use a small diagram with colour-coded ancient and restored areas, and a short text explaining that Roman portraits were often recarved and that museum displays are arguments, not neutral facts. If the neck is not original, consider showing it separately or omitting it, because a reconstructed neck can mislead. Explain the 1941 acquisition label as part of the object's history. This meets conservation ethics and gives visitors the evidence they need.
3. What technical examination would most efficiently test the recutting hypothesis? Explain what each technique can and cannot prove.
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Prioritize raking-light microscopy and silicone peels of tool marks before any cleaning; this can distinguish a fresh 4th-century surface from an ancient one. UV and infrared will map restorations and any recut edges. CT scanning can reveal internal cracks and the depth of the neck join without damage. Examine the break at the jaw for tool marks continuing across it; if they do, the recut happened after breakage. Compare drill channels with dated portraits and measure pupil depth. Isotope analysis of the neck already separates it; do not re-sample the face unnecessarily. Archive research may recover the 1941 dealer's photograph, which could show the head before restoration. The efficient sequence is documentation, microscopy, CT, and then targeted sampling.