"XIX.5" is a biblical reference, connected to the legend on the other side: John 19:5
Quote: When Jesus came out wearing the crown of thorns and the purple robe, Pilate said to them, "Here is the man!" - NIV
...or, in Latin, "Ecce homo".
I'm pretty sure the portrait isn't supposed to be Jesus. Perhaps it's supposed to be Pilate? As for the chariot-driver, it's inspired by the design on numerous ancient coins, but doesn't seem to have any connection to the quoted scripture that is obvious to me.
Unless it's a scene from "Ben Hur"?
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis