I give it to you, it's a variety, but damned difficult to see. Honestly, I certainly have seen it, but never reacted to it. So I never documented it!
I only have one in my collection and also one in my doubles list, so I can't really control anything, if they are the same.
From my collection


From my doubles


I think I have one of each, but to see that, is not easy?
Globetrotter
Coin varieties in French:
https://monnaiesetvarietes.numista.com