I have the Belgium 2 /12 Euro coin card (Catalogue Link) and the reverse appears to be minted at an angle to the front and having looked at a few images online this seems to be specific to my coin. Photos:


Any thoughts on if this an error and if so, if there are any other examples and if this is likely to increase the value?
Apologies if I've got my terminology wrong, this is new to me :)
Thanks in advance for any info on this.