Just a hunch -- those may have been made as fantasy / tribute / ?? chips by Rich Burgel, but I didn't attempt to research to pin it down. Especially if those are stickered inlays placed on blank NEVADA mold chips.

There was an article in CCN within the last couple of years that included chips & more from the Burgel estate auction, but I didn't look it up. Check your back issues for a multi-page article. (There were Burgel-made chips NOT in that auction too, I think.)

I have a very vague recollection of seeing chips similar to those in Burgel's retail store in LV but it was years ago.

Sorry I can't be more definitive.