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A 13th century CE illustration showing Byzantine emperor Michael III (r. 842-867 CE) crowning his great friend and political ally Basil the Macedonian co-emperor. The latter would take the crown himself in 867...

This chalice dates from the early 9th century AD and was found in 1980 on a monastic site at Derrynaflan, Co. Tipperary This chalice is part of a hoard of altar vessels...