Not trying to be rude, but I believe these cards are counterfeit. The back of the cards look exactly like counterfeit cards I had. And the fronts do not look right either..
Unfortunately these do look to be replicas. The borders on the back seems to run into the rest of the card in areas. Could you post more pictures so we can see if they are real or not?
Yeah you can especially notice on the back in the bottom right borders. They're not supposed to blend in like that. Not to be rude but I saw another user also auctioning fake cards and I kindly let her know and now she puts "could be fake" in her description. This is essentially a sale and you wanna make sure your product is authentic otherwise you lose credibility not to mention being accused of fraud since you did not mention whether they were real or not.