Card Grading Scale Explained
Learn how the PSA grading scale works, what each grade means from PSA 10 to PSA 1, and how those grades broadly compare with the Tree Frog Grading (TFG) scale.
Understanding the card grading scale is important for collectors of Pokémon cards, sports cards, TCG cards, and non-sports cards. A professional grade helps show a card’s condition, supports buyer confidence, and protects the card in a secure slab.
Many collectors already know terms like PSA 10, PSA 9, and PSA 8. This page explains what those grades mean and also shows how they broadly compare with the Tree Frog Grading (TFG) scale.
What Is a Card Grading Scale?
A card grading scale is a system used by professional grading companies to assess the overall condition of a trading card. Grades are based on factors such as centering, corners, edges, surface quality, print defects, wear, creases, and general eye appeal.
In simple terms, the better the condition of the card, the higher the grade. Higher-grade cards are often more desirable because they are better preserved and usually harder to find.
PSA Grading Scale Explained
PSA uses a 1 to 10 grading scale, with 10 being the highest standard on the normal numerical scale. Collectors commonly use PSA grades as a benchmark when buying, selling, and comparing cards.
| PSA Grade | Label | Meaning |
|---|---|---|
| PSA 10 | Gem Mint | Exceptional card with extremely strong presentation and only the tiniest possible flaws. |
| PSA 9 | Mint | Outstanding card with very minor imperfections. |
| PSA 8 | NM-MT | High-grade card with light wear visible on close inspection. |
| PSA 7 | Near Mint | Attractive card with modest wear or minor condition issues. |
| PSA 6 | EX-MT | Solid card with more noticeable wear but still good overall presentation. |
| PSA 5 | Excellent | Moderate wear becomes more obvious. |
| PSA 4 | VG-EX | Visible wear, surface faults, and possible light creasing. |
| PSA 3 | Very Good | Noticeable wear, edge damage, and reduced eye appeal. |
| PSA 2 | Good | Heavy wear with multiple obvious defects. |
| PSA 1 | Poor | Severe damage, heavy wear, or major defects, while still being identifiable. |
TFG Grading Scale Explained
Tree Frog Grading uses a system with Alpha 10, Bravo 10, and then numerical grades from 9 down to 1. TFG also provides sub-grades, giving collectors a more detailed view of how a card achieved its final grade.
| TFG Grade | Meaning | Summary |
|---|---|---|
| Alpha 10 | Perfect | The highest possible TFG grade, reserved for truly exceptional cards. |
| Bravo 10 | Pristine | Near-perfect card with only the smallest possible flaws. |
| 9 | Mint-tier | Very high-grade card with only tiny visible imperfections. |
| 8 | Near Mint / Mint-range | Strong card with light wear or minor faults. |
| 7 | Near Mint-range | Attractive card with modest wear. |
| 6 | Excellent-range | More noticeable wear but still a respectable example. |
| 5 | Mid-grade | Moderate wear and condition issues are clearly visible. |
| 4 | Lower mid-grade | Heavier wear, possible creasing, and reduced eye appeal. |
| 3 | Low grade | Clear wear, edge damage, and surface problems. |
| 2 | Very low grade | Severe wear with multiple obvious defects. |
| 1 | Minimum grade | Heavy damage, but the card remains intact enough to receive a numerical grade. |
PSA to TFG Grade Comparison
There is no exact guaranteed conversion between grading companies, because each company has its own standards and grading philosophy. However, this table gives collectors a useful guide for how PSA grades broadly translate to TFG grades.
| PSA Grade | Broad TFG Equivalent | General Translation |
|---|---|---|
| PSA 10 | TFG Bravo 10 / Alpha 10 | Top-tier condition. The very strongest examples may achieve Alpha 10. |
| PSA 9 | TFG 9 | Mint-level card with only very small flaws. |
| PSA 8 | TFG 8 | High-grade card with light visible imperfections. |
| PSA 7 | TFG 7 | Clean card with modest wear or minor issues. |
| PSA 6 | TFG 6 | Excellent-range card with more noticeable wear. |
| PSA 5 | TFG 5 | Mid-grade card with moderate wear and visible faults. |
| PSA 4 | TFG 4 | Lower mid-grade card with heavier wear. |
| PSA 3 | TFG 3 | Low-grade card with obvious wear and damage. |
| PSA 2 | TFG 2 | Very low-grade card with severe defects. |
| PSA 1 | TFG 1 | Heavily damaged but still intact enough to grade. |
Why Sub-Grades Matter
One of the biggest advantages of the TFG system is transparency. Sub-grades help explain how the final grade was reached by showing the card’s performance in key areas such as centering, corners, edges, and surface.
This can be especially useful when comparing cards against the PSA scale, because it gives collectors a clearer idea of where a card’s strengths and weaknesses actually sit.
What Can Lower a Card Grade?
Common issues that can reduce a card grade include:
- Off-centering on the front or back
- Whitening on corners and edges
- Scratches, print lines, and scuffs
- Dents, pressure marks, or indentations
- Creases, stains, or discolouration
- Tears, peeling, or other structural damage
Should You Grade Your Cards?
Grading can be worthwhile if you want to protect valuable cards, confirm authenticity, improve buyer confidence, or preserve key cards in your collection. It is especially popular for Pokémon cards, sports rookie cards, vintage cards, chase cards, and sentimental collection pieces.
If you already understand terms like PSA 10 and PSA 9, this page can help you better understand how those grades broadly compare to the TFG grading system before you submit.
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