You know, that's interesting.
I thought the value of the "euro" was supposed to be universal, like the value of the dollar (or British pound or Canadian dollar or Mexican peso or Russian ruble), its value determined by some sort of European central bank.
I never paid much attention; I had assumed this central bank, whatever it is, would issue the currency, not the governments of the different countries in the European Union.
Weird, that a "euro" issued in Greece would have a different value than a "euro" issued in Belgium.
I've been saying this for years, and continue to say it; the European "Union" is a temporary transient phenomenon, and sooner or later will crumble apart. The recent inclusion of former Soviet colonies in central Europe has been bearing this out, as those who once lived under socialism aren't that keen on living under socialism again, even if more benign.
The bureaucrats in Brussels, Paris, and Berlin are finding they aren't universally popular.
It took a bold act of courage, for Norway to buck the trend and stay out of the European "Union" altogether, and for the British to retain their own currency rather than adopting the "euro"--but one suspects there's going to evolve more and more exceptions, until the European "Union" is no more.