hmm, just bc it has that tag and a "receipt" doesn't mean the bag is authentic.
i trust the ladies on here to know what they're talking about, and i agree that this looks more like a hybrid of the luxe ligne and the mc.
if you can compare it to this photo from e-bay, you can see some differences like where the chain strap comes through the openings on the side of the bag, and how the braid around the edge continues to the top of the bag.....thats what I notice anyway unless the bag you have is a different model? (I'm no Chanel expert....)
tan03, I would suggest you to bring in to the nearest chanel boutique and get it authentify. I agree the leather seem a bit weird looking to me but I'm no expert so I'm not much of a help here. There are plenty of good fake in the market and they can even make the card and receipt to look identical. So beware.