Once paper money has run its course, I expect there to be a return to metal coinage alongside digital currency. I don't really see an inherent elegance to coinage though because of the problem of standardization. You have to trust the mint to some extent or melt down a random sampling of coins to assay them. Counterfeiting could be an issue with private mints.
Discussion
Yes much to ponder on this
GN fellow pleb, pura vida, catch you manana!