A Reichsbank note for five thousand million (5 Milliarden) mark, dated Berlin, 10 September 1923, at the height of the German hyperinflation. It is printed on one side only, as paper and ink ran short, and was worth little more than a loaf of bread within weeks.
What it boughtOn the date printed on it, 10 September 1923, an inland letter in Germany cost 75,000 marks to post, so this note would have paid for 66,667 letters. By December 1923 the same letter cost 100 billion marks.