Which is why I am glad I bought my Henkei TC a long while ago. Now it is just too hard to tell on a MISB.
Ebay would probably do squat, unless you could provide pictures, and even then you have to jump through hoops to prove that you are correct to get a refund. If the listing says reissue, then most likely the seller will get away with it. IMO Ebay are useless when it comes to stopping people from selling KO's.