XIR322559 Probably Saint Lawrence, martyred on an iron grill (mosaic) (detail of 182913) by Byzantine School, (6th century); Oratorio di Galla Placidia, Ravenna, Italy; (add.info.: formerly known as the Mausoleum of Galla Placidia (d. 450); other interpretations of this figure include: a saint throwing heretical books on a fire; angel announcing the Last Judgement or Christ holding the book of Life at the Last Judgement;); out of copyright.