Unlabelled Finn Juhl Spade chair?  

There could be a worn stamp on a hard-to-see part of the frame (inside rail or under seat framing), which the seller has missed.

Thank you @cdsilva, you may be right! I appreciate your input. I have been absent from posting here for quite a while however I regularly have a late night scroll to keep up to date! They are beautiful chairs and usually I wouldn’t be making such a big purchase sight unseen but they are in a different country. I also am not familiar with the chair so I was afraid it could have been produced as a copy of the original. 

I’ve never owned one of these, but the photos look correct. I believe this design is knockdown with the same keyhole joints as other F&D chairs, so if you are unable to view firsthand before buying, ask the seller to send detail photos of the keyhole joints. I assume the chair will be disassembled anyway for shipping.

There is a heavily inspired design made by Pastoe, which has nothing to do with Finn Juhl, despite the claims of numerous dealers. 

Indeed it looks similar, interestingly I had the same chair as the one you have pictured but it was labelled as M. Nissen, so definitely not designed by Finn Juhl. 

@cdsilva thank you for your advice, I bought them as they have a solid returns policy. I will update when I receive them!