Maybe copper should have no Carus aspect, silver should have 1, and gold 64.
Ha, was just talking to MadCrayloz about this and he and I came to the same thought.
Isn't 64 Carus a lot?
How much does a gold ingot have?
EDIT:
Yeah it is a TON of Carus.
Ok no Carus for the copper and silver currencies, but maybe six for the golden one.
That still leaves Permutatio, Tempus, Alienis, and maybe Metallum, but likely not...
EDIT:
Ok so here is a list, how does this sound?
Denier = 1 Permutatio
Denier Argent = 3 Permutatio, and 1 Tempus
Denier Or = 6 Carus, 6 Permutatio, and 1 Tempus