Tracy, there were two different sets. 2006 & 2007.
The 2006 were much rarer and had serial numbers.
Although 1000 of each were made the majority were never put out into the casino and have not surfaced since either.
They are still selling at $30-$60 a chip. I fact I just sold a couple in the last week at $45 each.
I have January-November in stock, missing just one. Email me if you want to do a deal.

For 2007 I only have a couple. They were very poor sellers and I turned most of what I had in just before they closed.