rsirian1
The one that sold for 2525 euro was a proof (650 minted) but was attributed to the mint set line.
I saw that, but that doesn't explain that ultra high price. The one from 94.31 € was also a proof coin and even graded (PF65 Ultra Cameo), which makes it mostly even more expensive.
I see these kind of coins often enough but never for that high price. Maybe they fell for that toning?
Here's a comparable set, also proof, from another Emirate, and other denominations, but still, I bought that set for 355 €:

That 2525 € for only that 1 coin is extremely high:
