Comic Book Grading — Understanding the CGC and CBCS Grading Scale

Professional grading has transformed the comic book collecting market. Where collectors once relied on their own condition assessments — and sometimes on the often-optimistic grading of sellers — the emergence of third-party grading services in the early 2000s introduced standardized, authenticated condition grades that provide a shared language for buying and selling. Understanding the grading scale is fundamental to collecting comics at any level.

The Grading Services

CGC (Certified Guaranty Company)

Founded in 2000, CGC is the dominant third-party comic book grading service. CGC:

• Employs a team of professional graders who assess each book independently
• Assigns a numerical grade on a 0.5 to 10.0 scale
• Encapsulates the book in a tamper-evident hard plastic case (“slab”) with a label showing the grade, title, issue number, and other information
• Maintains a census (population report) tracking how many copies of each issue have been graded at each grade level
• Uses different colored labels to indicate grading categories (blue for universal/unrestored, purple for restored, green for qualified, yellow for signature series)

CBCS (Comic Book Certification Service)

Founded in 2014 by Steve Borock (who previously managed CGC’s grading department), CBCS is CGC’s primary competitor. CBCS follows a similar grading scale and encapsulation process. While CGC dominates market share, CBCS-graded books trade at similar prices for most titles and grades.

The Grading Scale

The standard 10-point comic book grading scale:

10.0 — Gem Mint

A perfect, flawless copy. No manufacturing or handling defects of any kind. This grade is almost never assigned; even new comics from the printer typically have minor imperfections.

9.9 — Mint

Nearly perfect. Only the most minor, virtually invisible imperfections allowed — a barely perceptible manufacturing flaw, for example. Extremely rare grade.

9.8 — Near Mint/Mint (NM/M)

Outstanding copy with only the most minor wear. Near-perfect cover, sharp corners, virtually flat spine, clean staples, bright cover gloss. This is effectively the highest grade most collectors encounter. For modern comics, 9.8 is the standard “top grade” target.

9.6 — Near Mint+ (NM+)

Nearly perfect with slight evidence of handling. May have a very minor stress line or barely visible corner crease. Cover gloss is high. An exceptional copy.

9.4 — Near Mint (NM)

A well-preserved copy showing minimal wear. Minor stress lines, slight spine stress, minor corner blunting, and minimal foxing to interior pages are acceptable. Still an excellent, attractive copy.

9.2 — Near Mint- (NM-)

Minor wear visible. Small stress lines, minor color flecks on spine, minor foxing, or slight corner wear. The copy is still very attractive and well above average.

9.0 — Very Fine/Near Mint (VF/NM)

Clear minor wear. Slight spine roll, minor cover creasing, small stress marks at staples. Cover retains high gloss. A very nice copy.

8.5 — Very Fine+ (VF+)

Slightly more wear than 9.0. More noticeable stress lines, minor spine rolling, slight cover wear at edges.

8.0 — Very Fine (VF)

An above-average copy showing moderate wear. Minor creases, noticeable spine stress, possible small color-breaking crease. Cover gloss is reduced but still present. Most copies of well-preserved older comics fall in this range.

7.0 — Fine/Very Fine (FN/VF)

Above average showing noticeable wear. Moderate creasing, some spine rolling, minor staining or foxing. The copy is still attractive and displays well.

6.0 — Fine (FN)

Above-average showing significant wear. Moderate creases, noticeable spine rolling, possible small tears. Cover shows moderate loss of gloss. Pages may show moderate tanning.

5.0 — Very Good/Fine (VG/FN)

Average-looking copy with moderate to heavy wear. Significant creasing, notable spine rolling, possible small pieces out of cover or moderate staining.

4.0 — Very Good (VG)

Below-average with significant wear. Heavy creasing, notable spine roll, possible small to moderate pieces missing from cover, moderate staining. Pages show significant tanning or browning.

3.0 — Good/Very Good (GD/VG)

Heavily worn. Cover may have significant pieces missing, heavy creases, heavy soiling. Staples may be loose or missing. Still complete.

2.0 — Good (GD)

A complete copy showing heavy wear and significant damage. Cover may be heavily soiled, creased, or have significant pieces missing. Pages may be brown and brittle.

1.0 — Fair (FR)

A heavily damaged but complete copy. Cover may be detached, have major pieces missing, or be heavily soiled. Pages may be brittle with significant staining.

0.5 — Poor (PR)

A barely intact copy. Major defects — detached cover, missing pages, major pieces missing, heavy damage. Typically a reading copy only or a placeholder for an extremely rare issue.

How Grading Affects Value

The Exponential Curve

For key issues, the relationship between grade and value is exponential. A one-point improvement in grade can double or triple the price at higher grades:

Example: Amazing Fantasy #15 (first Spider-Man)

• CGC 2.0: ~$15,000–$20,000
• CGC 4.0: ~$30,000–$50,000
• CGC 6.0: ~$70,000–$100,000
• CGC 8.0: ~$200,000–$350,000
• CGC 9.0: ~$500,000+

Census Rarity

The CGC census reveals how many copies of each issue have been graded at each level. For vintage comics:

• Most surviving copies grade between 2.0 and 6.0
• Copies grading 8.0 and above are scarce
• Copies grading 9.0 and above are rare
• Copies grading 9.4 and above are extremely rare for pre-1970 comics

The 9.8 Premium

For modern comics (post-1980), CGC 9.8 is the standard top target. The premium for 9.8 over 9.6 is often disproportionate to the actual difference in condition — a 9.8 may sell for two to five times what a 9.6 brings. This “9.8 premium” reflects collector psychology (the desire for “the best grade”) and the relative scarcity of 9.8 copies.

Restoration and Its Impact

Restored Grades

CGC uses a purple label for books that have been professionally restored. Restoration includes:

• Color touch (recoloring areas where original color has been lost)
• Piece replacement (adding paper to replace missing pieces)
• Spine reinforcement (adding material to strengthen a weakened spine)
• Cleaning (chemical or mechanical removal of stains or dirt)
• Pressing (flattening creases under heat and pressure)

Restored copies grade on the same numerical scale but are valued significantly less than unrestored copies at the same apparent grade. A restored 8.0 may sell for half or less of an unrestored 8.0.

Pressing and Cleaning

Pressing — using heat and pressure to flatten non-color-breaking creases — is widely practiced and is not considered restoration by CGC. Cleaning — the removal of surface dirt — is similarly acceptable. Both can improve a book’s grade by a point or more.

The comic book grading system provides the standardized condition language that the market needs to function efficiently. Whether you are buying a $20 modern comic or a $500,000 Golden Age key, understanding what each grade means — and how grade translates to value — is the essential foundation of informed collecting.