I agree with John. I have found that the 2 1/2" cardboard flips hold casino chips quite well. As he said, there is room on the the front or back of the cardboard surrounding the chip to write info (like chip issue year, TCR ID#, value, etc.).
Then, I slide these flips into a 12-place vinyl page and store them all in 3-ring binders. I've found this method to be highly organized.