Flanders wrote:
a Perth coin is worth 1.47 of a Dawnstar coin
That's slander and an attempt to sway the uninformed market investors and im suing you in the Imperial Court for this.
Each coin would be of the (attmepted) same gold value or silver etc, but with a differing coin print on it, e.g. specific faces from their respective realms, nobles, or perhaps landmarks to denote the differing realms.
Maybe some kind of Imperial related name, maybe after age old places, or names of past titanic figures in the Empire to bring together the universal nature of the currency? Each realm might have their own local nicknames for a gold or a silver piece of course.