Rich,
As far as I know there are 9 different styles of Mirage Roulette chips that were Made over the years. I am not sure if all these varieties actually were put in play.

Chipco - 2 varieties

Plain Mold - 2 varieties

24 Lines - 2 varieties

Roulette Mold - 2 varieties

8 White edge marks - 1 variety

That makes 9 different varieties/styles of the Mirage Roulettes that I am aware of.

Take care,
"Mr. Roulette"