The War of the Gold Nobles (2018)

In my opinion the sensible way to fight this is to stop pretending - if there is no way to stop counterfeiting, then pretending that the rate is a fixed value should have been abandoned. Let people use their own weights, measures and systems of credit. Of course, that might have inconvenienced the king in whatever wars he wanted to wage so probably not a practical option (from his perspective). But better for the rest of us.