The episode deals with Knapp's "THE STATE THEORY OF MONEY", translated from German by Marco Saba, which is the English translation of the original German chapter 4 of Georg Friedrich Knapp's book "The State Theory of Money" (1906). This chapter, previously considered "lost", provides a comparative analysis of the monetary systems of several European states, including England, France, Germany and Austria, examining the evolution of their coins, from bimetallic to gold-based, and analyzing the influence of political and economic factors on the nature of currency.

https://www.amazon.com/STATE-THEORY-MONEY-Lost-Chapter-ebook/dp/B07K4GL6JS