The Forgery specialisation Caermyn Coins can't be shown to merchants in the Caermyn market - The dialogue does not appear. I would not be surprised if this holds true for all instances when you can show the two kinds of tokens - Does possession of both kinds cancel out the dialogue? Either way, it removes the single mechanical advantage the feat currently offers (and it's already a small one).
Yeah, sorry, it took me a while to get around to writing this. As soon as I'm back in Mistlocke IG I will do a proper report of it.
Seems to have been fixed already.