German hyperinflation is one classic and often-cited example, and with good reason. When I was named president of the Federal Reserve Bank of Kansas City in 1991, my 85-year old neighbor gave me a 500,000 Mark German note. He had been in Germany during its hyperinflation and told me that in 1921, the note would have bought a house.
In 1923, it would not even buy a loaf of bread. He said, “I want you to have this note as a reminder. Your duty is to protect the value of the currency.” That note is framed and hanging in my office. Someone recently wrote that I evoked “hyperinflation” for effect.