I usually use it only if storywise I want to point out differences in two cultures/countries. Like if I am playing up the scarcity of elves using elven coins may draw a reaction.
Same with old hoards and treasure if there is a reason I need to point out an element of history I use it.
Later
Same with old hoards and treasure if there is a reason I need to point out an element of history I use it.
Later