You are not the first to dispute or question if this chip is really from Las Vegas.
A good friend of mine and an old time Las vegas collector - told me the same thing last year. He said that chip is not from Las Vegas. I believe him more than anyone else. Even if years from now it is positively ID'd Vegas - I probably still won't buy into it.
Take it for what it is worth - you will not find that chip on my website - I only feature Genuine and True Las Vegas Casino Chips (with very few exceptions!)
Here is a real Las Vegas Thunderbird Chip!
Pete Rizzo