Are there historical cases of country A printing the currency of country B for the main purpose of economic warfare? I recently read in a news article that a large amount of Libyan banknotes printed in Russia were seized in Malta following an order coming from the USA. Both Russia and the USA have geostrategic interests in this part of the world so I assume this action is probably linked to an economic warfare operation. Banknotes normally include a large amount of security features that prevent people to easily counterfeit them but I assume that for large countries like China, Russia or the USA it is not a big deal to print banknotes of a foreign country. In time of war it can be quite interesting for a large country to print a lot of banknotes and spread them in the economy of an adversary country to destabilize its economy. But putting apart the above mentioned news article I wasn't able to find evidences of such a scenario so my question is :
Are there historical cases of country A printing the currency of country B for the main purpose of economic warfare ?
Very obscure historical example:
From 1287 to 1295, the Danish nobleman Stig Andersen Hvide was leading a band of outlaws from the island of Hjelm supported by the king of Norway against the king of Denmark. Stig managed to kidnap expert coin makers and bring them to Hjelm, where they produced counterfeit Danish coins.
This allowed Stig and his supporters to buy up all the supplies they wanted in Danish merchant cities. The heavy inflation and the problems it caused for the Danish economy made it difficult for the Danish king to afford assembling an army against Stig.