Yep, thats a repop tag, seller admits as much. Several tell-tale signs on that one.
BTW, the question posted on that auction talks about that tag being "illegal" Well, fender tags are not meant to be a means of establishing a car's VIN and identity. The dash pad plate, drivetrain and body stampings do that. The door decal is not a part of the car's means of ID either. That decal is just to certify that the car complies with all federal safety standards on the date of it's manufacture.
The fender tag was just a means of Id'ing what body options/mods the body shell needed as it rolled down the body line.