Also there is this chip if you look at the sellers eBay store. Also offered at the $1500 price.

THIS IS A RARE CHIP FROM THE LANDMARK HOTEL & CASINO IN LAS VEGAS, NV. THE LANDMARK WAS IMPLODED IN 1995 TO MAKE WAY FOR PROGRESS FOR THE CONVENTION CENTER. THE CASINO ITSELF WAS CLOSED IN 1990.

KNOWING AHEAD OF TIME THAT THE CASINO WOULD CLOSE THESE CHIPS WERE SPECIALLY MADE WITH THE YEARS OF OPERATION ON THEM - 1969 TO 1990, AS WELL AS THE FAMOUS SPACE NEEDLE LOOKING HOTEL.

Once again, someone without the facts has seen fit to just make up a nice fable to cover the rarity and their imagination of what might have been.