However, I would be skeptical of the Atra blades you purchased from China, since in Asia it's called the Vector and the packaging looks nothing like the US/European carts you can buy at Wal-Mart. If the word "Atra" was anywhere on the package it was probably a fake.
I know the Vector is made for the Asian market, but does that mean Gillette isn't producing any branded Atra cartridges in China with the intention of exporting them to other markets? I'm not in denial about the possibility that my carts are fake, but I don't want to automatically assume they are just because of the country of manufacture. There is nothing unusual looking about the packaging - no misspellings, or anything else. Nothing about the package or the cartridges themselves arouses suspicion. They shave well and fit the razor (vintage 1977 Atra) perfectly - no looseness or wobbling, and the pivot has full range.
BTW, I checked the order. Amazon was the actual seller; it wasn't a third party selling via Amazon, if that makes any difference.
Here are some down-and-dirty pics: