Our Grading System is what we came up with that works best for us. - We base our Grading on condition of corners, edges, creases and cleanliness of cards. We do not lower Grading for writing on card or being postal used though in most cases, we will mention it for grades 1 & 2. There are occasions that we make mistakes. we are human. If you are not happy with your purchase, please contact us, we will work it out. We strive to make customers happy with their purchase. A happy customer is a returning customer.