hi, i have a chip/coin from harrahs. I am wondering if there is any value to this chip/coin. It is a 1995a harahhs 15 aniversary coin. It is 24k hge and has a dolphin on the reverse of the coin, 20 dollar denomination. I tried looking on the net for the value of it, but i could not find it. it would be nice if one of you can tell me a little about this chip/coin, thank you.