【N】New  Brand new with tags.

【S】New / Unused  New item, but may have insignificant scratches or slight discoloration due to storage or display.

【A】Excellent  Used item, may have insignificant scratches and signs of usage. 

【AB】Very Good  Used item, has some insignificant scratches and other signs of usage.

【B】Good  Used item, has some scratches, stains and obvious signs of usage.

【BC】Decent  Item has scratches, discoloration and other noticeable signs of usage.

【C】Usable  Item has scratches, discoloration and other heavy signs of usage.