The important thing with this chip is that it has a denomination shown, and no other logo.

I think because of these facts, it pushes the location to probably one of the Nevada City Clubs.

There were five different City Clubs in Nevada:

Carlin, NV: DOTS Mold (This one ruled out)
Elko, NV -No chip info (could be from here)
Henderson, NV (appears to be slots only)
Las Vegas, NV (no chip info)
Wells, NV (No chip info)

All of the Illegals I've seen have a logo, or are dot molds, or have no denomination on the chip. This one doesnt match with any of the known City Club illegals. So I'm ruling that side out. At least for the time being.

This seems to be the first known City Club chip to surface with a Hub mold showing the City Club hot stamp along with a denomination.

Maybe we have to dig into the Langworthy records a bit.