You may find what you're seeking by using the "New Issues Service" section of RenoCasinoChips.com, operated by Larry H. See --
http://renocasinochips.com/new_issues.php

I too enjoy doing a chip run to the casinos... but it's sometimes more cost effective to just purchase the chips you want from someone like Larry.
What with the cost of gas, etc. ... plus you get brand new chips from him.