I have three old chip sets available on eBay. I found them awhile emptying a box. They are the following:

Four Queens: Ladies of Baseball (1995) This was my first chip show!
Arizona Charlies: Football commemorative, a.k.a. Superbowl (1996)
Pioneer Club: Moments in Nevada History (no idea when it was put out, but it was awhile ago.)

I have no idea if these are hard to find or what. I don't keep up with Nevada chips, which is why they are being sold.

Thanks,
Ed