Mint (MT) Comics, 9.9 to 10.0: The best example of comic book condition ever seen. Perfect, or as near to perfect as possible.

Near Mint/Mint (NM/M) Comics, 9.8: Almost perfect. Only minor imperfections. Comic book is flat and shows no wear.

Near Mint (NM) Comics, 9.2 to 9.7: Nearly perfect with only minor binding errors allowed. Ink is bright and reflective, no cover wear.

Very Fine/Near Mint (VF/NM) Comics, 9.0: Outstanding condition. Slight cover bend apparent and wear is almost imperceptible.

Very Fine (VF) Comics, 7.5 to 8.5: Excellent condition. Relatively flat cover with minor corner wear. Paper is supple, not brittle.

Fine/Very Fine (FN/VF) Comics, 7.0: Above-average condition. Minor cover wear shows. Corners may be blunted.

Fine (FN) Comics, 5.5 to 6.5: Above average. Cover shows wear, but is clean with no creasing. Blunted corners common. Minor or moderate spine roll.

Very Good/Fine (VG/FN) Comics, 5.0: Above average, but obviously used. Minor cover wear with minor or moderate creases. Minor staple tear and minor rust acceptable.

Good/Very Good (GD/VG) Comics, 3.0: Used with substantial wear. Cover loose, or detached at one staple. Discolouration or fading apparent.    

Good (GD) Comics, 1.8 to 2.5: Substantial wear, obviously read. Dull cover. Moderate soiling and staining.

Fair/Good (FR/GD) Comics, 1.5: Substantial and heavy wear. Cover lacks luster. Soiled, scuffed, and possibly unattractive. 

Fair (FR), 1.0 Comics: Heavy wear. Lowest collectable grade. Spine split and roll common. Missing, rusted, or discoloured staples. 

Poor (PR) Comics, 0.5: Little or no collector value. Missing large chunks. Corners significantly round or missing altogether.