A few years ago I bought a silver strike from the Colorado Grande Casino. Unlike Nevada SS's it has no face value, but looks just like the Nevada $10 strikes.

On one side, in the gold color rim, it says: "Colorado Grande Casino • .999 Fine Silver". In the silver part it says "Maggie, ghost of the Grande" and there's a picture of a woman that I presume is Maggie.

On the other side, in the gold color rim, it says: "Pioneers of Cripple Creek • Mollie E. O'Bryan".
In the silver part is a picture of a woman that I presume is Mollie.

I don't see any mint mark on it. Sorry, I don't have a scanner, so no picture.

Is this a common piece? Thanks for any help.