Comic Book Grading Guide
Everything collectors should know before submitting books to CGC and other graders — plus how existing CBCS slabs fit the market today.
Foundations
What is comic book grading?
Third-party grading sends your comic to an independent company that evaluates physical condition, checks for many types of restoration, and seals the book in a tamper-evident holder called a slab. The label shows a numeric grade, publication details, and a certification number you can verify online.
Collectors use grading for authenticity of condition, long-term preservation, insurance documentation, and easier comparison when buying or selling — especially on key issues and high-grade copies.
Full 10-point scale (NG – 10.0)
Half-point steps from 0.5 through 8.5. Between 9.0 and 10.0, graders use 0.2 increments (9.0, 9.2, 9.4, 9.6, 9.8, 9.9, 10.0). NG indicates no standard numeric grade was assigned (No Grade).
Compare
Major grading companies
Each company has different label programs, fees, and market perception. Confirm current submission terms on official sites before shipping books. CBCS is no longer accepting new submissions as of April 17, 2026; use CGC for new grading unless another active grader fits your needs.
CGC
Long-standing market leader
Certified Guaranty Company pioneered modern comic encapsulation and maintains one of the hobby’s largest census databases. Many auction houses and dealers reference CGC slabs routinely.
Strengths
- Strong resale liquidity on high-end keys
- Extensive census and cert lookup tools
- Widely recognized signature and pedigree programs
Considerations
- Premium fees at higher service tiers
- Turnaround varies with demand — check current estimates
- Crack-out/resubmit culture can pressure over-submitting
CGC generally commands the strongest resale premiums in today’s market, especially on golden/silver keys and books where census population matters to buyers.
CBCS
Submissions closed — April 2026
CBCS is no longer accepting new submissions
As of April 17, 2026, CBCS has closed its submission program. Population reports, order tracking, and grader notes remain available on cbcscomics.com. Existing CBCS slabs continue to trade in the secondary market.
Comic Book Certification Service was a major CGC alternative for encapsulation, signature programs, and free grader notes. Collectors still encounter CBCS slabs when buying and selling — but new books should be submitted to an active grader such as CGC.
Strengths
- Existing slabs remain widely recognized in the hobby
- Free grader notes via QR code on CBCS labels
- Population reports and cert lookup tools still online
Considerations
- New submissions are not accepted (closed April 17, 2026)
- No option for newly acquired raw books needing fresh grading
- Some buyers still prefer CGC on highest-tier keys
Treat CBCS as an active label in the resale market, not a current submission path. For new grading, use CGC or another company that is accepting books. Verify holder integrity and cert numbers when buying CBCS slabs.
PGX
Historical third-party grader
PGX operated as an earlier encapsulation service. You may encounter PGX slabs in the secondary market on older inventory. Verify holder integrity and buyer demand before pricing or purchasing.
Strengths
- Legacy slabs appear on vintage listings
- Useful context for estate and long-held collections
Considerations
- Limited role in today’s primary submission market
- Resale demand is niche compared with CGC/CBCS
- Research current holder policies before buying or selling
Treat PGX as a historical label — not a default choice for new submissions when maximizing liquidity is the goal.
Decision
Should you grade a comic?
Grading makes sense when the slab improves protection, documents condition, or helps resale on books with real demand. Consider era, rarity, expected grade, fees, and whether you plan to keep or sell the book.
Modern commons, sentimental readers, and damaged copies often stay raw. Keys, sharp high-potential copies, and verified signature candidates are typical submission targets.
Pros
- Protects and preserves a book in a tamper-evident holder
- Documents condition for insurance, display, and resale
- Can improve buyer confidence on key issues and high grades
- Supports witnessed signature programs where applicable
- Creates a permanent cert number for verification
Cons
- Fees, shipping, and insurance add real cost
- Low grades on common books often hurt more than help
- Grading is subjective within published standards
- Slabbing makes reading the book impractical
- Undisclosed restoration or defects may receive qualified labels
Preparation
Cleaning & pressing
Pressing uses controlled heat and pressure to reduce some non-color-breaking defects. Cleaning removes surface soil — often through professional dry cleaning, not household chemicals.
Many collectors press before grading when defects are eligible, but pressing does not guarantee a higher grade. Graders still judge color breaks, stains, rust, and structure.
May improve (with pros)
- Non-color-breaking dents and shallow bends
- Some spine ticks and light waviness (case by case)
- Minor surface soil when professionally dry cleaned
Cannot fix
- Color-breaking spine stress and creases
- Stains, rust, mold, and water damage
- Missing pieces, tears, and tape pulls with paper loss
- Trimming, restoration, and color touch
Process
How to submit books
Create an account
Register on the grader’s website. You will need contact info, return shipping preferences, and payment on file.
Select a service tier
Choose a tier based on declared value and how quickly you need books back. Economy tiers typically take longer; express tiers cost more.
Complete the submission form
List each book with title, issue, year, publisher, declared value, and any special services (signatures, pressing, minimum grade).
Pack books safely
Use rigid mailers, corner protection, and moisture-safe materials. Never tape directly on a comic or bag.
Ship insured
Use a tracked courier service with insurance matching declared value. Keep photos and tracking numbers.
Grading & encapsulation
The facility grades, quality-checks, and seals books in holders. Status updates appear in your online account.
Receive your slabs
Inspect holders on arrival. Verify cert numbers online before listing or storing long term.
Typical turnaround (general ranges)
- Economy / value tiersOften several months during busy periods
- Standard tiersTypically weeks to a few months
- Express / walkthroughDays to a few weeks when offered — premium pricing
Checklist
Supplies for submissions
Quality materials protect books in transit. Optional future offerings from The Runs Comics may include these items — for now, source from reputable comic supply retailers.
Comic bags
Acid-free, appropriate size for book
Available soon at The Runs Comics
Backing boards
Acid-free; support without over-bowing
Available soon at The Runs Comics
Painter's tape
Tape mailer flaps only — never on the book
Available soon at The Runs Comics
Gemini mailers
Rigid comic mailers for individual books
Available soon at The Runs Comics
Bubble wrap
Cushion mailers inside the outer box
Available soon at The Runs Comics
Cardboard
Reinforce sides; keep books flat
Available soon at The Runs Comics
Packing paper
Fill voids without crushing spines
Available soon at The Runs Comics
Outer shipping box
Sized so contents do not shift
Available soon at The Runs Comics
Safety
How to package books safely
Keep books flat, supported, and dry. Use rigid mailers per book or small batches, then cushion inside a sturdy outer box with no room to shift. Insure for declared value.
Reference
Common grading terms
Avoid
Common gotchas & mistakes
Fingerprints and oils
Handle by edges only. Oils can cause defects visible under grading lights.
Humidity damage
Store in climate-stable spaces. Swelling, waviness, and mold are difficult to reverse.
Over-cleaning
Aggressive erasers or chemicals can abrade paper and lower grades or trigger restoration notes.
Amateur pressing
DIY pressing on valuable books risks irreversible damage — especially on brittle or foil covers.
Trimming & restoration
Trimmed edges and color touch are serious issues. Graders detect many treatments.
Shipping damage
Most preventable with rigid mailers, proper void fill, and insurance.
Cracked slabs
Use official reholder services. Opening slabs yourself breaks tamper evidence.
Modern foil covers
Require experienced pressing judgment — easy to damage with excessive heat.
Signatures ≠ automatic profit
Unverified signatures may not qualify for premium labels. Research witness rules first.
Keep learning
Related comic guides
Grading connects to preservation, eras, investing, and prep — build context before you submit.
Comic Eras
Platinum through Modern — context for keys and runs.
Read guideStorage & Preservation
Bags, boards, boxes, and protecting condition.
Read guideInvesting & Collecting
Value drivers, keys, census data, and market basics.
Read guideCollector History
Milestones that shaped the hobby we love.
Read guideCleaning & Pressing
SoonPrep basics before submission.
View pageSupplies
SoonBags, boards, and storage — shop category.
View pageAnswers
Frequently asked questions
The Runs Comics
Collect smarter.
Preserve your grails. Learn before you submit.