I didn't look at the brown one because I'm certain the black one is fake. Nothing stands out to me on the brown one except for the way the lining is bunched up. I always tell people to get a second opinion as it protects them too. As tPF isn't considered a professional authentication service my opinion may not help in an ebay or Paypal case. We find that most sellers will take a return so they don't ding their reputation with ebay. I'm pretty sure the seller buys these bags as a lot and didn't realize that a fake one was in there. We have had a ton of reports on tPF of people receiving fake bags from major retailers because a buyer did a bait and switch of a return. The seller and their bags seems legit so this black York seems like an exception however based on that alone I would return the brown one too.