Stock Photo: Mosaics of the triumphal arch and apse, by Unknown, 1836, 19th Century, mosaic. Italy, Lazio, Rome, San Paolo Fuori Le Mura Basilica. View mosaic triumphal arch gold background half-bust Jesus Christ blessing clipeus with rays Evangelists light blue: azure and pink clouds groups of donors on right and left crowns scrolls apsidal bowl medieval mosaic.