I know that the article implies it, but shouldn't it be mentioned that Rome used Drachma too?
As for comparative values, perhaps a mention of a drachma's approximate value as a collector's item would be useful.
collector costs would - though then we get into state of the piece of money. The usual Roman coin was the
denarius, though. Polybius is using drachmae to talk about Roman soldiers because he's writing in Greek for a Greek audience.
aureus (gold),
denarius (silver),
sestertius (silver), and then I forget. I think the little money was called a
quadrans (copper). --
MichaelTinkler