The Railroad Pass Hotel and Casino has the distinction of being the longest, continuously open, licensed casino in Nevada. The Railroad Pass Casino was granted Gaming License #4 in 1931 (when Nevada Gaming was fully legalized) and numbers 1, 2 and 3 have all folded.
According to Rob Lange (a CC>CC member on TheChipBoard.com) the Railroad Pass Casino has just released a $5 chip commemorating that 75th Anniversary milestone.
To look at the scan, I cannot see an indication that the chip is a Limited Edition (a quantity is not present) however, such wording may be on the outer edge of this chip, as it appears to be a Chipco ceramic.

(scan courtesy of Rob Lange)
Rob advises that he is selling these for $7.50 each. Here is the link to that message, if anyone is interested:
http://www.thechipboard.com/cgi-bin/...pl?read=598699
When I verify Limited Edition status, I will post that here.
Jim (Gaming Ore) Follis