Received some information on these plaques:

* There were 2000 Plaques made in 1994 for a Corp. meeting. and these were made to give out as gifts to any member that showed up. They were not sold in the gift shop.

* It was a Corp. meeting of the owners of Caesars Palace and Share holders in 1994. All the casinos mentioned on the Plaques were involved.

I still have one for $90 shipped.