Does that mean that even if you see a tag "MADE IN CHINA" in the zipper compartment it's still authentic?
No. The counterfeiters will still put a similar Made in China tag in the bag. Crooks always stay on top of things like this. The only sure way of getting a real Prada is from a Prada boutique. I don't even trust NM, BG or Saks b/c people have been known to buy real Pradas and return fakes to those stores. Since the SAs have NO clue how to authenticate, fakes can get out on those shelves.