I think I could have a rational dialog with Michael on criteria. I agreed with him several times that anybody can make a list by any criteria they choose, and someone else can collect chips by a different criteria.

But you said, >>One could put any chip on that board that says "2000". Doesn't make it a true "millennium" chip in my opinion. It could be interepreted as "countdown to 2000".<<

That argument is very true for the Harveys chips, and several others. It's just an argument when you're talking about Hilton. If Michael wants a list of chips that have the word "millennium" on them, fine. He should label it as such. If someone else wants to use his list, but are interested in all chips that were undeniably issued to commemorate the new millennium, they will want to add the Hiltons back on. I offered unrefutable proof that Hilton issued these chips to commemorate the new millennium (whenever that is, which is a different subject entirely I won't discuss with you). You are of course free to interpret to your heart's content, and collect what you choose. My purpose is to be informative. It only turns into an argument when I bump into you.