Although I have lot of experience in coin collecting (and grading), I have not much experience with paper money (and even less experience with grading). So, hopefully somebody with more knowledge in this field can answer some of my (hopefully not too stupid) questions. At first, some notes are awared with EPQ/PPQ paper quality designations. I totally understand, that 64 EPQ is better than just plain 64. But what about 63 EPQ vs 64? Which one is "better"? Secondly, PMG grading scale states, that for grade 70 "The margins and registration must appear centered to the unaided eye", for 69 "the margins and registration may appear slightly off center" and so on... I kinda understand it, but at the same time I dont understand it at all. I feel, that I need some visual aid to completly understand, how much "off center" something can be for specific grade. Maybe somebody can suggest some web page with explaing pictures? Or add some pictures in this topic, which would show difference. Thanks in advance.