These are usually called cardboard coin holders. Flips are plastic holders with a pocket for the coin and a flap that "flips" over the coin.

I believe Howdy Herz had these made for his inventory and he also sells them. C.T. Rodgers in California probably sells them as well. There are also clear plastic sleeves that fit over this size cardboard holder to make an even more finished appearance. If you have ever bought a chip from Dean and Jodi, you have seen what the result looks like. They also computer-print an information label for the extended portion of the holder.