"I found 6 in one order at the Firsta.
I found 3 in one order at the Palms.
I found 2 different errors in a 1,000 chip order 300, 300, and 400 of the real ones."

That's what makes them so "rare" Gene!

I think that A.C. cages are required to go through the chips and look for errors before they are released to the tables.