I'm not so sure about that one. The tag does look wierd. It doesn't look perfectly square but maybe it's the angle and the stamping looks funny, but then again it could just be the pic. I have a lurex bag at home that I got from Saks and I can check tonight what the inside tag looks like. I don't think I ever looked very closely at it so I don't recall what it looks like.
I'm looking at my lurex bag (which is a totally different style but is from the same collection) and my tag looks way different. There numbers aren't so close to the bottom and there is a larger amount of border around the wording.