Replica of a mosaic dated to 4th century that comes from a mosaic ensemble from the dome of the Roman Rotunda of Thessaloniki, and more specifically the lower zone called “the zone of the Martyrs”. Against a golden background a Martyr is represented in bust, part of the full-body figure from the dome of Rotunda. He wears a luxurius chlamys with tavlion, buttoned up in the shoulder, that is the official garments of a Roman official. The replica was made and presented within the framework of the 9th International Conference of Byzantine Studies, in Thessaloniki 1953.