Disclaimer: This article is for informational and entertainment purposes only. It is not financial advice. Please do your own research before making any financial or purchasing decisions.

Card grading is one of the most important parts of collecting, whether you love it or hate it. Collectors love to collect cards that have PSA (or one of the other major grading company’s) stamp of approval).

There is so much inconsistency in grading between companies (and oftentimes, even from the same company). However, here are the stated four primary factors that grading evaluates: centering, corners, edges, and surface. While all contribute to a card’s grade and value, their importance varies significantly depending on the era of the card (vintage vs. modern) and collector preferences.

Here’s a breakdown of each factor, their impact on grading, and how they influence market value.

1. Centering

What It Means:
Centering measures how evenly the card’s image is positioned within its borders. For vintage cards, centering is often the hardest to grade well due to older printing processes

Why It Matters:

• Eye Appeal: Poor centering (e.g., 70/30 splits) is immediately noticeable and can overshadow other qualities. While centering on the back can be harder to notice in some cases, bad centering sticks out on the front, especially if the borders around the card are not even
• Rarity: Well-centered vintage cards are uncommon, making them highly sought-after
• Grading Impact:
  • PSA and BGS deduct points for centering deviations beyond 55/45 (front) or 75/25 (back).
  • For vintage cards, graders may allow slightly more leeway due to era-specific printing inconsistencies

Key Insight:
Centering often dictates a card’s “eye appeal,” and for many vintage collectors is the single most important factor

2. Corners

What It Means:
Corners must be sharp and free of fraying, dings, or rounding

Why It Matters:

• First Impression: Corners are the first detail collectors notice
• Structural Integrity: Damaged corners suggest wear from handling or poor storage
• Grading Impact:
  • Even minor wear (e.g., slight whitening) can drop a card’s grade
  • Vintage cards are especially vulnerable due to age

Key Insight:
Corners are oftentimes the most penalized factor in mid-to-low grades. A vintage card with soft corners rarely grades above PSA 6, even with strong centering

3. Edges

What It Means:
Edges should be clean, sharp, and free of chipping or discoloration.

Why It Matters:

• Visibility: Edge wear is glaring on dark-bordered cards (e.g., 1986 Fleer basketball).
• Grading Impact:
  • Edges are graded more leniently than corners but still critical for high grades.
  • Modern cards with foil edges (e.g., Panini Prizm) are prone to chipping, making edge quality a key differentiator

Key Insight:
Edges matter more for modern cards than vintage, as factory cuts are precise and flaws are easily spotted. For vintage, edge wear is common but less penalized if corners and centering are strong

4. Surface

What It Means:
The surface must be free of scratches, print defects, creases, or stains.

Why It Matters:

• Subtle but Critical: Surface flaws are harder to detect but can drastically lower grades
• Print Quality: Vintage cards often have print lines or texture variations

Grading Impact:

• Surface is the most overlooked factor in lower grades but becomes critical for Gem Mint (PSA 10/BGS 9.5).
• Foil or glossy cards (e.g., Topps Chrome) are graded harshly for surface flaws

Key Insight:

Which Factors Matter Most?

Factor	Vintage Cards	Modern Cards
Centering	★★★★★ (Drives eye appeal)	★★★ (Important, but easier to find)
Corners	★★★★ (Critical for grading)	★★★ (Important, but easier to find)
Edges	★★★ (Less important)	★★★★★ (Key for Gem Mint)
Surface	★★★★ (Drives eye appeal)	★★★★★ (Key for Gem Mint)

Final Takeaways

In theory, all four factors are important:

This is especially true for modern cards where the production quality is a lot better than it was in the past; however, centering & corners typically are the easiest two factors to check (especially in pictures) and find, so in many cases surface & edges are the differentiating factors in a card getting a good grade.

For vintage cards, grades can be all over the place. For example, while in modern cards it can be difficult to tell the difference between a PSA 9 and a PSA 6; in vintage cards, there is significant variation even between cards of the same grade. There can be two cards that both receive PSA 2s, except one looks significantly better than the other (likely due to either centering or surface). In these situations, many collectors will pay a significant premium for the one with better “eye appeal” even if they have the same grade. Just be aware that while grading is still important for vintage cards, it is super important to do your own gut check as well.