Only unstable third-world countries do that.

The Bank of England honors all of its old banknotes: "There is no deadline to exchange old banknotes with the Bank of England." https://www.bankofengland.co.uk/banknotes/exchanging-old-ban...

The United States has never demonetized any of its coins or banknotes. All of them are honored and are in fact still legal tender to this day -- even the $100,000 bill! https://en.wikipedia.org/wiki/Obsolete_denominations_of_Unit...

Although Canada has revoked legal tender status for some of its older bills, "The Bank of Canada continues to honor them at face value" https://www.bankofcanada.ca/banknotes/about-legal-tender/

In contrast, all of Europe has demonetized its old currencies (Deutschmark, French Francs, Italian Lira, etc.) when switching to Euros, and a few times before that. I've just looked it up and one Napoleon Franc is currently worth ~20€.

So, it's not that uncommon.

You can still convert old DM into Euros at the initial rate in Germany (https://www.bundesbank.de/de/aufgaben/bargeld/dm-banknoten-u....)

The majority of EU member set a limit date: https://www.ecb.europa.eu/euro/exchange/html/index.en.html

I don't think the majority in that list has set a limit for bills, only for coins

Uhm, i guess you are right. (9 vs 11). Sorry I guess I didn't pay enough attention.

No worries, you were right that a majority put time limits on at least some exchanges into Euro.

Europe is an unstable third world country, haven't you heard?

Denmark must be an unstable, third-world country, then:

https://www.al-bank.dk/presse-og-nyheder/nyheder/2023/1000-k...