The Signed Panel and the Second Hand
A regional museum owns a gold-ground panel, 68 × 45 cm, showing the Virgin and Child with two saints. An inscription along the bottom reads 'Lippo me fecit' and a date that is abraded but ends in '...89'. The panel came to the museum in 1932 with a note calling it 'school of Lippo di Dalmasio'. You are on a cataloguing panel. Scientific analysis finds: poplar support with a dendrochronological terminus post quem of 1394; underdrawing in two hands-one confident, one hesitant; punchwork patterns identical to a documented altarpiece by Lippo in Bologna; pigment analysis shows azurite, not the ultramarine used in Lippo's signed works; the inscription is on a later gesso layer. The curator wants to upgrade the label to 'Lippo di Dalmasio' because a signature is present. The education officer worries about overclaiming. You have one week and a 400-word label limit.
1. Which two technical findings most directly weaken a fully autograph attribution, and what alternative explanation should the panel consider?
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The two strongest challenges are the inscription's later gesso layer and the underdrawing in two hands. A signature added on a later gesso layer cannot be treated as original evidence of authorship; it may have been added by a restorer, dealer, or owner to increase value. Two underdrawing hands suggest divided labour: one hand may have designed the composition, while another executed parts of it. The azurite instead of Lippo's usual ultramarine supports this, because workshop assistants often used cheaper materials on less visible areas. The identical punchwork is important but cuts both ways: it ties the panel to Lippo's workshop design, not necessarily to his own hand throughout. The dendrochronological date only gives a terminus post quem, so it cannot prove execution in any single year. The panel should therefore consider 'Lippo di Dalmasio and workshop' or 'workshop of Lippo', with the signature treated as later addition rather than proof of autograph status.
2. Recommend a catalogue attribution and a label phrase that is honest about uncertainty. Justify both in relation to the evidence.
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A defensible catalogue attribution is 'Lippo di Dalmasio and workshop', with the caveat that the master's direct participation is uncertain. This fits the evidence better than either extreme. Calling it fully autograph overweights a later inscription and ignores the second underdrawing hand and the azurite. Calling it simply 'school of' underweights the identical punchwork and the connection to a documented Lippo altarpiece, which indicate a close workshop relationship rather than loose imitation. A label phrase such as 'Attributed to Lippo di Dalmasio and workshop; the signature was added later' is concise and honest. In the 400-word label, I would explain that punchwork links the panel to Lippo's Bologna workshop, while the later inscription and divided underdrawing prevent certainty about his own hand. This wording protects the museum from overclaiming while still communicating why the work is significant. It also gives the education officer a clearbasis for explaining attribution as an argument, not a fact.