Rick, Good morn.,
Ron Haglund from Montrose, Co. here.
We too have a wild horse slot glass the same as you.
We have spent a lot of time in Cripple Creek and took pics years ago of
the many colorful murials and signs in CC.
I have a round one of : Wild Horse Casino, yellow back ground.
Both horse and letters of sign are different from our slot glass.
Sure would like to find out original home for these beautiful
pieces.

Any new clues, please let me know.

Thanks and best to you, Ron