A question of mine has been marked as duplicate, and I don't understand why.
The question is What kind of coin was given by Jaqen H'ghar to Arya?, and was marked as duplicate of Was the significance of Arya's Braavosi coin ever explained?.
These two questions are about the same object, but they ask something completely different: what I'm asking is if the coin of the Faceless Men could be identified as a regular currency coin, and the linked question doesn't provide any satisfactory answer about this particular aspect; the only answer that seems to address my original question takes as a reference the show, while I'm only interested in references from the books; I've used only the relevant tags on my question on purpose.
Since the linked question don't provide an answer to what I'm asking, could my question be reopened?
If my question was ambiguous, I could try to refine it and make its scope more clear.