Hyperinflation Museum

The Free City of Danzig hyperinflation of 1922 to 1923

Prices in the Free City of Danzig rose 2,440% in September 1923 alone, doubling roughly every 6.52 days, which places this single city-state eighth on the Hanke-Krus World Hyperinflation Table (Cato Institute). Its final emergency note, dated 11 October 1923, carried a face value of ten milliarden marks, or ten billion.

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Last updated: July 2026

How severe was the Free City of Danzig hyperinflation?

Severe enough to earn a separate line in the world record book. The Hanke-Krus World Hyperinflation Table (Cato Institute) dates the Danzig episode from August 1922 to mid-October 1923, with the highest monthly inflation rate of 2,440% recorded in September 1923, an equivalent daily rate of 11.4%, and prices doubling every 6.52 days.

Numbers like that are hard to feel until you translate them into the rhythm of an ordinary week. A daily rate of 11.4% means the price you were quoted on Monday morning was roughly double by the following Sunday. Wages paid twice a month were an insult by the time the second half arrived. Shopkeepers stopped marking prices on goods and started posting a multiplier on the wall instead, a pattern repeated in nearly every hyperinflation we cover in the complete ranked list of world hyperinflations.

The Danzig figures come with an important methodological footnote that most summaries drop. Hanke and Krus calculated the Free City's inflation rate using German inflation data, because the German papiermark was the currency circulating in Danzig throughout the period. That makes Danzig and Germany statistical siblings rather than independent observations. What separates them is the end date, and that difference is the whole story of this page.

Why did a city of 366,730 people get its own hyperinflation entry?

Because Danzig was not a city inside a country. It was a self-governing territory of 1,952 square kilometers, or 754 square miles, created on 15 November 1920 under Article 100 of the Treaty of Versailles, placed directly under the authority of the League of Nations, in customs union with Poland and represented abroad by Poland. It had its own Senate, its own budget, and after October 1923 its own currency.

That constitutional oddity is exactly why the monetary story diverges. Danzig had inherited the papiermark from its German past and had no central bank of its own, so when Berlin's printing presses ran, Danzig's prices ran with them. But the Free City was not obliged to stay on the mark. It had a League of Nations High Commissioner, an independent finance department, and a Senate with the standing to declare a new unit of account.

The Senate used that standing twice. First it authorized local emergency money to keep commerce moving while the mark was disintegrating, notes issued as Notgeldschein der Stadtgemeinde Danzig, literally emergency money of the city municipality of Danzig. These belong to the same family as the German municipal issues covered in our guide to notgeld and emergency money, though Danzig's carried the authority of a recognized state rather than a town council. Second, it exited the mark altogether while Germany was still printing.

The result is a fourteen-month numismatic window with a hard start and a hard stop. Very few hyperinflations produce such a tidy collecting universe, which is part of why Danzig appeals to collectors who find the sprawling German series overwhelming.

How high did Danzig denominations climb in 1923?

From 100 marks on 31 October 1922 to 10,000,000,000 marks on 11 October 1923, a jump of one hundred million times in under twelve months. The ladder ran through one million marks on 8 August 1923, ten million on 31 August, one hundred million on 22 September, five hundred million on 26 September, and then five and ten milliarden marks on the same October day.

Read that sequence again with the dates attached and the acceleration becomes physical. Nine weeks separate the one million mark note from the ten milliarden note. Four days separate the hundred million from the five hundred million. By the final week the Senate was issuing two denominations at once because a single new ceiling would have been overtaken before the ink dried.

Two details in that table repay attention. The first is the provisional overprints. When the presses could not cut new plates fast enough, the Senate took existing 50,000 mark stock and overprinted it as one million marks. Overprints are always a tell that an issuing authority has lost control of its own production schedule, and they are one of the classic signals described in our guide to Pick catalog numbers, where such provisional types often sit slightly out of chronological order.

The second is stranger and more human. The high-denomination Danzig notes carry a printed expiry clause. The ten milliarden note states that it is to be redeemed at the city treasury between 10 and 20 November 1923, a window of eleven days. The Senate was not issuing money so much as issuing dated claims, admitting on the face of the note that the thing in your hand had a shelf life. Very few hyperinflation notes anywhere state their own expiry date in the design.

Danzig ranks eighth in the Hanke-Krus World Hyperinflation Table

Among the more than fifty episodes catalogued by Steve H. Hanke and Nicholas Krus, the Free City of Danzig sits at number eight by peak monthly inflation rate, ahead of Armenia, Peru and Poland, and behind Hungary, Zimbabwe, Yugoslavia, Republika Srpska, Germany, Greece and China. Germany at number five reached 29,500% in October 1923 against Danzig's 2,440% in September 1923.

Why does Danzig's peak fall in September while Germany's falls in October, when both were using the same currency and the same underlying data? Hanke and Krus explain it directly in their footnote. September 1923 was the last full month in which the German papiermark circulated in the Free City of Danzig. Germany kept circulating it into December, and so Germany went on to record a worse peak.

That single sentence is the most interesting thing about Danzig's entry. Danzig is not a milder hyperinflation. It is the same hyperinflation, exited early. The Free City is effectively a natural experiment in what happens when a small, credible, externally supervised authority pulls the plug several weeks before the sovereign next door. For readers who want the full spread of severity, from Hungary in 1946 at the top to the milder post-Soviet episodes, our ranked overview lays out every entry side by side.

How did the Danzig gulden end the crisis in October 1923?

In July 1923 the League of Nations finance committee approved a new and independent Danzig currency. The first gulden notes are dated 22 October 1923, with a second series dated 1 November 1923, and the gulden was set at 25 gulden to one pound sterling, or 9.6 pence per gulden. Notably, no fixed conversion rate to the old mark was ever announced.

That last point deserves emphasis because it is unusual. Germany's rentenmark and Hungary's forint both arrived with a published exchange ratio against the old unit. Danzig skipped that step. The gulden was defined against sterling, not against the mark, which meant the new currency's credibility rested on London rather than on any promise about the past. The peg gave importers, shipping agents and the Baltic grain trade a stable unit of account almost immediately.

The transition was staged in a way that tells you how urgent it was. The October and November 1923 gulden issues came from the Free City's central finance department, not from a central bank, because there was no central bank yet. The Bank of Danzig was only established on 5 February 1924 and opened on 17 March 1924, four months after the currency it would go on to manage. Those first gulden notes are, in effect, a bridge printed under pressure. The mark issues ceased to circulate, and the gulden went on to serve the Free City until 1939.

Why are Danzig notes a distinct collecting area?

Because Danzig is a complete, closed, correctly bounded country collection that most people can actually finish. The Free City's entire paper-money output runs roughly from Pick 13 through Pick 65, spanning 1922 to 1938, and it includes a full hyperinflation ladder, a currency reform, and a distinct post-reform gulden series with a real design identity.

Compare that with the German inflation series, which runs to hundreds of Reichsbank types plus thousands of municipal notgeld varieties. Germany rewards specialists. Danzig rewards completists. A collector working through the country-by-country approach to world banknotes can define a Danzig goal on a single sheet of paper and know exactly what finished looks like.

There is a second, quieter reason. Danzig no longer exists. The Free City was absorbed in 1939 and the territory is Gdańsk in Poland today, so every Danzig note is paper from a state that closed. That gives the series a documentary weight that outlives its economics. The Senate's own anti-counterfeiting warning on the high-denomination notes threatens not less than two years of penitentiary for anyone who imitates or alters them, a line that reads very differently once you know the issuing state had about sixteen years left.

Condition matters more here than in the German series, simply because far fewer Danzig notes were saved. The highest denominations were issued within weeks of the currency's retirement and circulated briefly, so survivors skew either heavily handled or, occasionally, crisp and untouched with almost nothing in between. If you are weighing a certified example against an uncertified one, our comparison of graded versus raw banknotes and the banknote grading guide explain what the holder is actually telling you. Store what you buy properly; the advice in how to store banknotes applies with extra force to century-old emergency paper printed on whatever stock was available.

As with all popular inflation-era material, be alert to modern novelty reprints and souvenir copies sold as decoration. Genuine Danzig notes carry the specific Senate wording, period watermarks such as interlaced lines, triangles or tear drops, and the printed redemption clause. Our guide to spotting counterfeit banknotes covers the checks worth running before you buy.

Frequently asked questions

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Danzig is the doorway into the wider 1923 story, so keep reading: the full German hyperinflation of 1922 to 1923 that Danzig exited weeks earlier, the municipal notgeld tradition the Senate borrowed from, and the German 100 trillion mark note that shows where the papiermark went after Danzig let go of it. To see how this episode measures against every other on record, start with the complete ranked list of world hyperinflations or browse available material in German and Danzig-era banknotes and curated hyperinflation sets, where selection and pricing vary with inventory.