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Corpus Inscriptionum Latinarum; , VI, 1117 (+p.4325) 
Base for statue of Diocletian, emperor (later re-used for Constantine I); erected by the guild of tanners ( coriarii ). Rome. 287 and 312-337 
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To the great and unconquered emperor, Caesar Caius Valerius Aurelius Diocletianus (later altered to Constantinus), pious, fortunate, unconquered Augustus, highest priest, with tribunician power, consul for the third time, father of the fatherland, proconsul, our lord. The corporation of tanners and leather-merchants, devoted to his divine spirit and majesty [set this up]. (On the side of the base) Dedicated on the Kalends of January (= January 1st), in the consulship of our lords Diocletian for the third time and Maximian, under the supervision of Thessius Secundus, patron(?) of the corporation of the tanners.
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