When I flip this coin over the reverse is upside down. Is this an error? Does it make the coin more valuable?
No, they're meant to be made like that.
Type collector, mainly into Seated. Young Numismatist. Good BST transactions with: mirabela, OKCC, MICHAELDIXON
It's the only one that I have that does that. Every other coin I have except for this turns over right.
It is supposed to be medal alignment.
Can you take a photo of it on an angle in front of a mirror so we can see both sides.
Yes they are both the same way
That's called "medal" alignment in your mirror photo. Coinage alignment is the opposite way.
That is correct then. That is the proper alignment.
Most countries, apart from the United States, use medal alignment for their coins these days.
The European Union standard for euro coinage is medal alignment. All circulating euro coins use medal alignment.