Icon of Christ of Latomos

The Icon of Christ of Latomos (or Latomou), also known as the Miracle of Latomos, is a 5th-century Byzantine mosaic of Jesus in the monastery of Latomos (now the Church of Hosios David the Dendrite) in Thessaloniki, Greece, that is an acheiropoieton (a religious image that is believed to have been made miraculously). The later legend of this mosaic goes back even earlier, to the late third century AD when Maximian and Diocletian reigned jointly over the Roman Empire.

Source: Wikipedia — Icon of Christ of Latomos (CC BY-SA 4.0)