Card Grading Terminology: 40+ Terms Every Collector Should Know

Why Terminology Matters

The card collecting and grading hobby has developed its own language over decades. When someone says "I cracked a BGS 9.5 quad and crossed it to PSA hoping for a gem," that sentence is incomprehensible to outsiders but completely clear to collectors. Understanding these terms is not optional if you want to buy, sell, and grade cards effectively.

This glossary covers the essential terminology from across the grading and collecting world. Bookmark it - you will reference it often.

Grading Company Terms

Slab

The sealed, tamper-evident plastic case housing a graded card. "Slabbed" means encapsulated. "Cracking a slab" means removing the card.

Raw

An ungraded card - not in any grading company's slab.

Label

The information card inside a slab displaying the company name, card identification, grade, and certification number. Labels vary by company - PSA uses colored backgrounds, BGS uses color-coded tiers (Black, Gold, Silver).

Certification Number (Cert Number)

A unique identifier for each graded card, verifiable on the grading company's website. Always verify cert numbers when buying graded cards.

Grade Designations

Gem Mint

The highest grade designation. PSA 10 is called "Gem Mint." The card is essentially flawless under standard examination.

Pristine

BGS's term for a 10 grade. A BGS 10 Pristine is rarer than a PSA 10 Gem Mint due to stricter standards. BGS 10 with all four subgrades at 10 receives a Black Label.

Mint

A grade of 9 on the PSA scale. Indicates a near-perfect card with one or two extremely minor flaws. Not to be confused with casual usage of "mint" meaning "great condition."

Near Mint (NM)

A grade of 7 on the PSA scale. Cards show minor wear visible during normal handling. In marketplace condition scales (TCGplayer, etc.), NM is used more broadly and does not correspond precisely to a PSA 7.

Qualifier

A designation added to a PSA grade indicating a specific defect. Qualifiers include MC (miscut), OC (off-center), PD (print defect), MK (mark), ST (stain), and OF (out of focus). See our full qualifier guide for details.

Half-Point Grade

BGS grades on a half-point scale (7, 7.5, 8, 8.5, 9, 9.5, 10). PSA uses whole numbers primarily. This half-point granularity allows BGS to distinguish between, for example, a strong 9 and a weak 10 - a distinction PSA's system collapses into either a 9 or a 10.

Subgrade Terms

Centering

The alignment of the printed image within the card's borders. Expressed as a ratio (e.g., 55/45 left-to-right). Both front and back centering are evaluated. See our centering guide for full details.

Corners

The condition of the card's four corner points. Evaluates sharpness, fraying, dings, and layer splitting.

Edges

The condition of the four sides of the card between corners. Evaluates whitening, chipping, roughness, and nicks.

Surface

The condition of the card's front and back faces. Evaluates scratches, print lines, staining, gloss variation, and indentations.

Subgrade

An individual score for one of the four evaluation dimensions (centering, corners, edges, surface). BGS displays all four subgrades on the label. PSA does not display subgrades.

Quad

Short for "quad 9.5" or "quad 10" - a BGS card where all four subgrades are the same score. A "quad 9.5" has 9.5 across all four subgrades. A "quad 10" is a BGS 10 Black Label.

Population and Value Terms

Population Report (Pop Report)

A database showing how many copies of each card have been graded at each grade level. Used to assess scarcity and inform pricing. PSA's pop report is the most referenced. Read our population report guide.

Pop 1

A card that is the only copy in the population report at that grade. A "PSA 10 Pop 1" means only one copy of that card has ever received a PSA 10. Pop 1 cards in high grades command extreme premiums.

Gem Rate

The percentage of submitted copies that received the highest grade (typically PSA 10). Calculated as (PSA 10 count / total graded count) x 100. High gem rates suggest easy grading; low gem rates suggest difficulty.

Crossover

Removing a card from one grading company's slab and submitting it to another company. Most commonly, BGS 9.5 cards are "crossed over" to PSA in hopes of receiving a PSA 10. The original company's population count does not decrease.

Crack and Resubmit

Removing a card from its current slab (cracking) and submitting it to the same or different company for re-grading. Done when the owner believes the card deserves a higher grade than it received. There is always risk - the new grade could be the same or lower.

Registry Set

A curated collection of graded cards assembled according to a grading company's defined set list. PSA's Set Registry and BGS's Registry programs rank collectors' sets by cumulative grade points and completion percentage. Competitive registry collectors drive demand for pop 1 and high-grade cards.

Comp / Comparable Sale

A recent sale of an equivalent graded card used as a pricing reference. "The last comp for a PSA 10 was $450" means a PSA 10 copy recently sold for $450. Comps from eBay sold listings are the most commonly referenced.

Defect Terms

Whitening

Exposure of the white core material at a card's edges or corners due to wear or chipping of the surface layer. Most visible on dark-bordered cards.

Silvering

Specific to foil/holo cards - a metallic silver discoloration along the edges where the foil layer is exposed or damaged. Silvering appears as a silvery sheen on the card's edges that differs from standard whitening.

Print Line

A factory defect - faint lines on the card's surface from the printing rollers. Print lines run in one direction across the card and are present from the moment of manufacture. See our print lines vs scratches guide.

Ding

A small dent or compression mark, typically on a corner or edge. Caused by impact with a hard surface.

Crease

A line of deformation across the card's surface caused by bending. Creases can range from surface creases (visible but not breaking the card's coating) to full creases (visible indentation that breaks through the surface layer). Any crease is a significant grade-reducing defect.

Warp / Bow

A curvature of the card from its flat plane, usually caused by humidity changes. Minor warp is generally not graded against; significant warp may result in a deduction.

Packaging and Supply Terms

Penny Sleeve

A thin, clear plastic sleeve used as the first layer of protection for a card. Named for their original cost (approximately one cent each). Cards should be placed in penny sleeves before any other protective holder.

Top Loader

A rigid plastic holder open at the top, used for storing and shipping raw cards. Standard top loaders are 3x4 inches. They protect cards well but are generally not used for grading submissions (Card Savers are preferred).

Card Saver

A semi-rigid holder (Card Saver 1 is the standard model) preferred by PSA for grading submissions. Open at the top like a top loader but made of thinner, more flexible material that allows easy card extraction without risking damage.

One-Touch / Magnetic Case

A thick, rigid case with a magnetic closure used for display and protection. Should not be used for grading submissions.

Process Terms

Submission

The act of sending cards to a grading company for evaluation. A "submission" can refer to the entire batch of cards sent in one order.

Declared Value

The monetary value you assign to each card when submitting. Used for insurance and service level eligibility. Must be reasonably accurate.

Turnaround Time (TAT)

The time from when the grading company receives your cards to when they ship back. Varies by service level and current volume.

Minimum Grade (Min Grade)

A threshold you set during submission. If the card grades below your minimum, it is returned unencapsulated, saving the encapsulation fee.

Collecting Terms

PC (Personal Collection)

Cards kept for personal enjoyment rather than investment or resale. "That's a PC card" means the collector is keeping it regardless of value.

Flip

Buying a card at one price and selling it quickly at a higher price for profit.

Case Hit

A particularly rare card that statistically appears approximately once per sealed case of booster boxes.

This glossary covers the core vocabulary of card grading and collecting. Mastering these concepts gives you the foundation to follow any conversation, understand any listing, and make informed decisions about your collection.