Things got even worse in Hungary than we have covered so far. Jan. 1, 1946 saw a new unit of account introduced - the adopengo (tax pengo). No actual notes were issued at first. The rate then was 1 adopengo = 1 pengo. By July it was 1 adopengo = 2 sextillion pengo. Adopengo notes had been eventualy issued. The highest denomination was 10 million adopengo. That would be 20 octillion pengo. When the forint was adopted, it was equal to 400 octillion pengo. The entire stock of pengo notes in the whole country was worth less than one tenth of a US cent. More information can be found here: http://www.tomchao.com/hb14.html Wickipedia has a section on Hungary under "hyperinflation". When I was in England in 1985, I was expecting to see the use of "milliard", not realizing it was obsolete. Nobody used billion because you might not know if it was old or new. The universal term was "thousand million". In France we have something like Mille Million = Un Milliard.