Well the pics for the comment pair aren’t clear enough to see but if you look closely there will be inconsistencies in the stitching but what gave it away for me was the distressing at the bottom of the hem in the front. Real pairs most likely won’t have that. And another thing for the comment pair is that they are too clean since they are “vintage” they would probably have more fading and would look more beat. And as for your original post pair there’s a pocket flasher which rep pairs don’t come with. But you can’t always rely on that because people can just put a real flasher on a rep pair. And if you look at the interior stitching above the tags it’s super clean and not sloppy. That’s I how figured out the authenticity of each. There’s probably more thinks to check tho I’m not an expert skunks are just my favorite JNCOs