Learn
Understand the grading basics.
The collector's guide
Your first submission.
A confident start.
New to grading? Explore the basics, prepare your cards, and follow your progress with a practical submission checklist.
A simple path forward
One step at a time.
Prepare
Inspect and protect your cards.
Submit
Create your grading submission.
Track
Follow your collection’s progress.
The essentials
Get to know grading.
A little knowledge goes a long way when you're choosing cards to submit.
What is Card Grading?
Understanding the basics of professional card grading
Card grading is an objective assessment of a trading card's condition by professional experts. We evaluate four key pillars: centering, corners, edges, and surface quality.
Each card receives a numerical grade from 1-10, with 10 representing a "Gem Mint" card in perfect condition. This grade provides buyers and sellers with a standardized, trusted assessment of condition.
Graded cards are encapsulated in protective holders (slabs) with tamper-evident security features, preserving their condition and authenticity for years to come.
Keep in mind
- Grading adds value by providing authentication and protection
- Higher grades typically command premium prices in the market
- Not every card is worth grading - consider card value vs. grading cost
Why Grade Your Cards?
The benefits of professional card grading
Protection: Our tamper-evident slabs protect your cards from handling damage, environmental factors, and counterfeiting.
Authentication: We verify the authenticity of your cards, providing peace of mind for buyers and sellers.
Increased Value: Graded cards often sell for significantly more than raw cards, especially in high grades.
Market Confidence: A professional grade from a trusted company gives buyers confidence in their purchase.
Keep in mind
- Grade your most valuable cards first
- Consider grading vintage cards, rookie cards, and rare variants
- Check recent sales data before submitting
Which Cards Should You Grade?
Selecting the right cards for grading
High-Value Cards: Cards worth $50+ in raw condition are typically good candidates for grading.
Vintage Cards: Older cards (especially pre-1990) benefit from authentication and preservation.
Rookie Cards & Key Cards: First-year cards of star players and iconic sets.
Modern Inserts & Parallels: Limited print runs, autographs, and special editions.
Investment Pieces: Cards you plan to hold long-term or sell at auction.
Keep in mind
- Use our AI Grade Estimator to predict grades before submitting
- Cards in excellent condition (8+) see the best ROI
- Consider market demand, not just card condition
- Bulk submissions save money on multiple cards
Understanding Card Condition
Learn what graders look for
Centering: The balance of borders around the card. Perfect centering has equal borders on all sides.
Corners: Examined for wear, rounding, or damage. Sharp, pointed corners indicate better condition.
Edges: Checked for chipping, whitening, or roughness. Clean, smooth edges are ideal.
Surface: Inspected for scratches, print defects, staining, or other imperfections.
Keep in mind
- Use a magnifying glass or loupe to inspect your cards
- Handle cards by the edges only, never touch the surface
- Store cards in penny sleeves and top loaders
- Poor lighting can hide surface scratches - inspect carefully
Preparing Your Cards
Proper handling and packaging
Sleeve each card in a penny sleeve, then place in a semi-rigid card saver or top loader.
Never use tape directly on cards or holders. Use painter's tape on outer packaging only.
Secure cards in a small box with bubble wrap to prevent movement during shipping.
Include your submission form with detailed information about each card.
Keep in mind
- Handle cards with clean, dry hands or cotton gloves
- Don't clean cards - this can cause damage
- Remove cards from magnetic holders and screw-downs
- Label packages clearly with "Fragile" and "Do Not Bend"
The Submission Process
Step-by-step submission guide
Sign in to your GSM account and choose Standard or Rush grading. You do not need to buy a package first.
Fill out the submission form with card details (set, year, player, card number, declared value).
Review your submission: existing prepaid grading is applied automatically. Pay only for uncovered Standard gradings and any Rush upgrades.
Print your submission form and packing slip.
Package cards securely following our packing guidelines.
Ship your package to our facility with tracking and insurance.
Track your submission through every step on your dashboard.
Keep in mind
- Double-check card details to ensure accurate labels
- Insure shipments for the total declared value
- Keep photos of cards before shipping for your records
- Use our bulk submission options to save on fees
Practical walkthroughs
Good habits start here.
Open a tutorial for detailed guidance at each stage.
Create Your Account
Sign up for free on our customer portal. No credit card required to register.
Choose Standard or Rush
Pick the service for your submission. Prepaid packages are optional, and existing credits cover Standard grading.
Fill Out Submission Form
Enter your card details, review the grading already covered, and pay only the remaining amount due before submitting.
Package Your Cards
Follow our packing checklist: penny sleeve → card saver → bubble wrap → box.
Ship to GSM
Print packing slip, include with cards, and ship with tracking and insurance.
Track Your Order
Monitor progress through your dashboard. You'll get email updates at each stage.
Gather Supplies
You'll need: penny sleeves, card savers or top loaders, bubble wrap, sturdy box, painter's tape.
Sleeve Each Card
Insert cards into penny sleeves carefully. Open the sleeve from the side, not the top.
Use Card Savers
Place sleeved cards into semi-rigid card savers. Stack cards back-to-back for protection.
Wrap Securely
Wrap the stack of cards in bubble wrap. Use tape on the bubble wrap, never on card holders.
Box and Secure
Place wrapped cards in a box. Fill empty space with packing material to prevent movement.
Label Package
Mark "Fragile - Trading Cards" and "Do Not Bend" on the outside of the box.
Inspect Under Bright Light
Examine cards under strong, angled light to reveal surface scratches, indentations, and print lines.
Check Centering
Measure borders with a ruler or use our AI Grade Estimator to assess centering ratios.
Examine Corners
Use a magnifying loupe (10x) to inspect corners for any rounding, whitening, or fraying.
Test Edges
Run your finger gently along edges to feel for roughness or chipping.
Compare to Population
Check our population reports to see grade distribution for the same card.
Submit Only the Best
Only submit cards you believe will grade 8 or higher for best return on investment.
Sort Your Collection
Separate cards by value tier: high-value ($500+), mid-value ($100-500), bulk ($50-100).
Choose Service Tiers
Choose Standard or Rush based on your timeline. One service level applies to each submission.
Pre-Grade with AI
Use our AI Grade Estimator to predict grades and filter out cards unlikely to grade well.
Organize Submission
Group cards by set and card number to simplify data entry and tracking.
Prepare Documentation
Create detailed spreadsheet with all card info. Export to CSV for faster form entry.
Ship in Batches
Split large submissions into multiple boxes. Insure each box separately.
Ready, set, submit
Make sure it's all covered.
Check off each item as you prepare. Progress stays with you while this page is open.
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A little extra care
Avoid the common missteps.
Using Tape on Card Holders
Tape residue damages cards and holders, making them difficult to open
Do this instead
Use painter's tape on outer packaging only, never on card savers or sleeves
Cleaning or Wiping Cards
Attempting to clean cards causes micro-scratches and surface damage
Do this instead
Submit cards as-is. Our graders assess natural condition, not cleaned cards
Over-Insuring Low-Value Cards
Insurance costs eat into ROI for bulk submissions
Do this instead
Insure total shipment value, not individual card maximums
Submitting Damaged Cards
Cards that will grade below 6 rarely justify the grading cost
Do this instead
Use AI estimator to pre-screen. Only submit cards likely to grade 8+
Incorrect Card Information
Wrong set/year/number causes label errors and delays
Do this instead
Double-check card databases and use exact official names
Insufficient Packaging
Cards can bend, shift, or get damaged during shipping
Do this instead
Follow our packing checklist exactly. Use rigid boxes, not envelopes
No Tracking or Insurance
Lost packages have no recourse without proof of shipment
Do this instead
Always ship with full tracking and insurance coverage
Using Screw-Down Holders
Screw-downs can cause indentations and surface damage over time
Do this instead
Remove cards from screw-downs before shipping. Use card savers instead
Keep these handy
Guides for your next step.
Your first of many
Ready to start?
Choose your cards and take the next step with GSM.