The Veil of Veronica, or Sudarium (Latin for sweat-cloth), often called simply "The Veronica" and known in Italian as the Volto Santo or Holy Face (but not to be confused with the carved crucifix Volto Santo of Lucca) is a Catholic relic, which, according to legend, bears the likeness of the Face of Jesus not made by human hand (i.e. an Acheiropoieton)
I believe that this picture is a good example of the Trinity. It shows God the father, God the son and God the spirit clearly. It also describes God the father as a creator and ruler. It shows God the Son as redeemer.