Jim,
I think the set you are refering to, actually has 11 tokens. They are:
Sphnix,Roman Coliseum, Olympiad, Great Wall of China, Parthenon, Taj Mahal,
Mt. Rushmore, Eiffel Tower, Leaning Tower of Piza, Hanging Gardens, and Colossus of Rhodes. Their value - ? I have seen them go on eBay for $60 or more, whatever that indicates. Although I have not seen the Harrah's, I think theirs were only 7 Wonders, but am not sure

Mike