I know that when talking about Ancient Roman coinage there are certain exchange rates that are well known. 1 aureus = 25 denarii/100 sesterces 1 denarii = 4 sesterces 1 sestertius = 2.5 ases All the exchange rates for different Roman coins are pretty well known. But I’ve been having difficulty finding similar information about Byzantine coinage. Does anyone happen to have even a rough estimate of Byzantine coin values in comparison to each other? Thanks!