I've collected Harrahs Reno/Tahoe chips for over 10 years and I still have only 20 different from this series. I know some are available in quantity, but not all. Be sure to scroll right to see all the chips. Note that there are very subtle color differences in some of the inlays. I suspect some of this is due to fading over the years.

I'd be interested in any that aren't shown in the scan below. Note that I have only two with the "A" overstamp and one "B". I'm also not convinced that the letter stamping was done by the casino.