Unless you happen to stumble upon gold often then you may be in luck...I bet $200 that they are fakes, HB6 Batteries were not sold in single or packs, only to manufacturers of laptop packs and in short order. Almost all of them are fakes if you see any for sale and if they are Authentic then they are used and pulled from those packs. I have purchased a few packs only to find 2 out of 6 cells were useful and 1 out of another laptop pack. If they are real and can get more then Ill send you money to grab me some.
On any advertisement that says these batteries are a replacement for:...then they are fakes. Even Samsung's are being faked on ebay now and Im going to tell you how to be sure they are Authentic since they are one of the only batteries I suggest to people. At the Negative connection under the wrapper there should be a Stamped letter or number (Only Samsung cells have these), there is only one bumped section below the positive terminal, they have a Tri-Post Positive terminal, they have no seams and the baby blue is pale and lifeless.