yes, exactly.813
L = 500, CCC = 300, X = 10, III = 3; 500+300+10+3 = 813
A year before Charlemagne's death
sorry, should have specified.Can I ask what that year is supposed to be? The best I can figure out is 263/363.
So maybe for the benefit of everyone, the text in the box is supposed to say:
the provinces of the Christian Empire (The Roman Empire, obviously)
governed in the year of our lord 813 by Charles August (Charlemagne)
crowned by god great, peaceful Emperor of the Romans and King of the Franks
etc. etc.
Also sorry if the Latin is kinda wonky, it's not my first language as you might guess.