Chips are made in a mold, I have forgotten the number of chips in a PS mold, but it is over 100. Maybe Blanchard will see this and give us some insight. The process is mostly a guarded secret.
Lets say 100 in a mold. That means all chips in the mold will be alike.
"UNIQUE" is not a word I would use unless I was prepared to prove it. "Known" is a much better word. There are plenty of chips out there in collections that most of us never see or hear about.

Chipco errors are made in 2's. If you find one, you can bet there is at least one more out there. At the Fiesta I recieved a 200 chip order. By accident a cage worker found an error while putting them in accountability. I started looking for its mate and found 5 more. We know that was all that was made. I got all 6 of them.

That said, I have a "UNIQUE" chip and I can prove it. Manfacturer has confirmed it was the only one that survived. Actually 2 made and one was notched.

"UNIQUE" is a word that leaves you open to eat a lot of crow, when someone finds a box of them in Grandpas attic. It has happened more than once.

"UNIQUE" is a word used to shock an ebay audience.