by Chuck “Caveman” Coker Today United States coins are most often graded on a scale that goes from 0 to 70 point. This scale was originally devised by Dr. William Shelby and is used by the major coin grading services today. A coin that's graded zero means that you can probably tell that at some point in time it was a coin. However, a coin that achieves a grade of seventy means that it is [...]