Has there ever been a currency that lived longer than about 70 years?

My grandma experienced 4 different currencies living in eastern Germany. Since 2001 its the Euro, but how will that last next to conservative, anti-european political trends in many neighbour countries?

Currencies, mostly those influenced by many economically different countries chance fast.
So in the longer term, holding Euros is almost as speculative as trading certain assets in the stock market lol

Physical things like gold are pretty safe in the longer term, many people will get it anyway in upcoming financial crises.
But knowing how the market works and managing your investments adapted to economic circumstamces is the best way in my eyes to keep money and wealth safe for the future.