Comic Book Grading Explained: CGC vs CBCS
What the grade scale means, when slabbing is worth it, and CGC vs CBCS.
By Web Admin
If you have ever browsed comics online and seen a book described as a “CGC 9.8” sealed inside a hard plastic case, you have brushed up against the world of professional grading. To a newcomer it can look like arcane collector snobbery. In reality it is a straightforward system that exists to solve one problem: how do a buyer and a seller who have never met agree on exactly how nice a comic is? This guide explains the grading scale in plain English, walks through when slabbing is worth the money, and compares the two companies that dominate the field, CGC and CBCS.
What “grading” actually means
Grading is the process of having a comic professionally evaluated for condition, assigned a numerical grade, and then sealed (“slabbed”) in a tamper-evident plastic holder with a label stating the grade. The point is trust. A raw comic’s condition is a matter of opinion and lighting; a graded comic carries a neutral third party’s verdict, so a buyer in another country can bid confidently on a book they will never hold before it ships.
The trade-off is that slabbing seals the book away — you can no longer read it — and it costs money. So grading is a tool for specific situations, not something you do to your whole collection.
The 0.5 to 10 grading scale
Comics are graded on a ten-point scale, from 0.5 (barely holding together) up to a pristine 10.0. Each number maps to a traditional condition term. Here are the tiers you will actually encounter:
| Grade | Label | Plain-English condition |
|---|---|---|
| 9.8 | NM/M (Near Mint/Mint) | Looks flawless to the naked eye; the practical ceiling for most books |
| 9.6 | NM+ | Near perfect, one or two microscopic flaws |
| 9.4 | NM (Near Mint) | Excellent; very minor imperfections on close inspection |
| 9.0 | VF/NM | Sharp and attractive with slight wear |
| 8.0 | VF (Very Fine) | Above-average; minor wear, still bright and flat |
| 6.0 | FN (Fine) | A solid, read-once copy with visible but modest wear |
| 4.0 | VG (Very Good) | Well-worn but complete; rounded corners, some creasing |
| 2.0 | GD (Good) | Heavily read; significant wear but intact |
| 10.0 | GM (Gem Mint) | Theoretically perfect; almost never awarded |
A crucial thing to internalise: on desirable books, the difference between adjacent grades is money. A hot key issue at 9.8 can be worth double the same book at 9.4, even though the two look nearly identical across a room. That single fact drives the entire grading economy.
What graders actually look at
Graders assess a book across several axes and combine them into one number:
- Spine — stress lines, ticks, and rolls are the most common grade-killers.
- Corners — sharp versus blunted or dinged.
- Cover — gloss, colour breaks, creases, and staining.
- Pages — white and supple versus tanned or brittle; page quality is noted on the label.
- Structural integrity — staples, tears, and whether anything is missing.
Anything that has been done to “restore” a book — colour touch, tear seals, added pieces — is disclosed on the label, and restored copies generally sell for less than unrestored ones at the same apparent grade.
What is “slabbing,” and what does it cost?
Slabbing is the sealing step. Once graded, the book is encapsulated in an inert plastic holder with the label at the top. It is protected from handling and the grade is locked in, but it is now a display object rather than a reading copy. Costs vary by turnaround speed and the book’s declared value:
| Service tier | Typical turnaround | Approx. cost per book |
|---|---|---|
| Economy / bulk | Slowest (months) | ~US$20–30 |
| Standard | Several weeks | ~US$40–65 |
| Express | Faster | ~US$75–120 |
| Walkthrough / high-value | Fastest | US$150+ (scales with value) |
On top of the grading fee you pay shipping both ways and insurance, which for a valuable book is not trivial. That total cost is exactly why grading only makes sense above a certain value threshold.
CGC vs CBCS: the two big names
Two companies dominate. CGC (Certified Guaranty Company) launched in 2000 and effectively invented the modern market; it is the largest and its slabs carry the strongest resale recognition. CBCS (Comic Book Certification Service) launched in 2014 as a competitor and built a reputation around transparency and its verified-signature program.
| Feature | CGC | CBCS |
|---|---|---|
| Founded | 2000 | 2014 |
| Market position | Largest; industry standard | Established challenger |
| Turnaround | Varies by tier; large capacity | Varies by tier; often competitive |
| Cost range | ~US$20–150+ | ~US$20–150+ |
| Resale premium | Highest recognition, broadest demand | Strong, slightly below CGC on average |
| Notable strength | Liquidity and brand trust | Transparency; verified signatures |
For most people the honest summary is this: if your goal is maximum resale liquidity, CGC’s brand recognition usually earns a small premium. If you value the signature-verification program or a specific pricing tier, CBCS is a perfectly reputable choice. Both are legitimate; the gap is narrower than online arguments suggest.
Pressing: the step before grading
Many valuable books are “pressed” before grading. Pressing uses controlled heat and pressure to remove non-color-breaking defects like bends, dents, and spine rolls, which can nudge a book up a grade or two. Reputable pressers are a normal part of the pipeline, and both grading companies offer pressing as an add-on service. For a book sitting right on the edge between 9.6 and 9.8, a good press can pay for itself many times over.
Signature Series and witnessed signatures
A plain signature on a comic can actually lower its grade, because to a grader an unverified pen mark is just a defect. The solution is a witnessed-signature program (CGC calls it “Signature Series,” and CBCS has its own verified-autograph process): an authorised witness watches the creator sign the book, which is then sealed with a special label certifying the signature. That yellow-label authentication is what lets a signed book command a premium instead of a penalty.
When to grade — and when not to
Pros
- Grade genuine key issues in high grade, where the premium exceeds the cost
- Grade books you want to sell to distant buyers who need assurance
- Grade witnessed-signature books to protect and prove the autograph
- Grade a prized book you want to display and preserve permanently
Cons
- Do not grade common or low-value books — the fees exceed the payoff
- Do not grade a book you actually want to read
- Do not grade a low-grade copy hoping for a miracle number
- Do not grade in a hurry — bulk tiers save real money if you can wait
The rule of thumb: if the graded value minus the raw value comfortably exceeds all your fees, grading makes sense. Otherwise, keep the book raw and well protected. If you are not sure whether a book clears that bar, our key issue watch gives a feel for which modern books are worth the trouble.
Protecting raw books is still job one
Most of your collection will and should stay raw. That makes proper storage the highest-return habit in the hobby: good bags, acid-free boards, sturdy boxes, and a stable environment keep a raw book at its grade so it is ready to slab the day it is worth it. We cover the whole setup in how to store and protect your comics.
Frequently asked questions
Is CGC or CBCS better?
Both are reputable. CGC is larger and its slabs generally carry the strongest resale recognition, so it tends to edge out CBCS on liquidity. CBCS is well regarded for transparency and its verified-signature program. For pure resale, most sellers lean CGC; for signatures or a preferred price tier, CBCS is an excellent option.
Does grading a comic increase its value?
It can, for the right book. Grading adds value when it removes buyer uncertainty on a desirable, high-grade issue — the graded copy sells for more than the raw copy plus the fees. On common or low-grade books, grading usually costs more than it adds.
Can I read a graded comic?
No. Slabbing seals the book in a plastic holder, so a graded comic becomes a preservation and display object. If you want to read it, buy a separate reading copy and keep the graded one sealed.
What is pressing, and is it cheating?
Pressing removes non-color-breaking defects like bends and spine rolls with heat and pressure, which can raise a grade. It is a widely accepted, disclosed part of the hobby offered by the grading companies themselves — not restoration and not cheating.
Ready to put this into practice? See which books are worth slabbing in our key issue watch, and keep everything else pristine with how to store and protect your comics.
