According to chip mold listings in Howdy's book (Nevada Gaming Checks & Chips, by Howard & Kregg Herz), it is listed as:

#27 - CPIPS (C & Card Pips) , page 19.

I'm not aware of its use in Nevada casinos however.

The maker not listed in Howdy's guide. Perhaps a mold made for Caro & Fils, though that's just a wild guess.
More likely a domestic (USA) maker.