Ron I have no objection to your use of any numerical grading system that you want to use.

My only point is and has been that unless you tell others how your system works (that is how to determine what a specific grade means) it is of know benefit to tell other people what the grade is.

So if you want to use a number to reflect wear, you should create a corresponding key to your system so that when I see the Ebay auction I know what the number means.

While we will understand that 95 is better than 85 we still don't know how much wear a 95 chip has.

also if you are going to only refer to wear, I think a scale of less than 100 is probably better.