there's an auction on ebay ending in 4hrs and theres many chips of this casino in Reno.
In the last Campiglia's Guide the $2,50 it's marked or did I miss omething?

link for the auction:
http://cgi.ebay.com/10-VINTAGE-CASINO-CHIPS-ASSORTED-RIVERSIDE-CASINO-/250808092363?pt=LH_DefaultDomain_0&hash=item3a6553c6cb