Paul, I saw that chip in the dealer's case before you bought it. You're right - the dealer is reputable, beyond reproach. I've known him for more than 10 years, and his honesty is without question. He said the red $1 and blue $5 were manufacturer's errors and were on the table for exactly one day. I have no reason to doubt him.

I think you have a unique chip. Congratulations on getting it.